History Characters / Ben102016

* BlamingTheVictim: [[spoiler:As he reminisces about the loss of his Gwen and Grandpa Max, he claims that their deaths were ''their own fault'' for getting in his way of defeating Vilgax, [[SelfServingMemory even though that's not it happened]]. While it ''would'' be understandable if he's only saying this out of grief and possible guilt, it's been so long since their deaths that it doesn't faze him anymore.]]

* AdaptationalDyeChange: Upgrade's TronLines go from green to purple in the reboot.

* {{Expy}}: An overpowered alien with CombatTentacles that Ben falls in love with, but it gets destroyed from the Omnitrix? Almost reminds you of Feedback.

* GoodColorsEvilColors: He is usually a bright, nice shade of blue. When the High Override controls him, he turns a slightly sick-looking shade of purple.

* {{Expy}}: Of Zs'Skayr. Both responsible for one of Ben's aliens going rogue (Ghostfreak and Shock Rock respectively), both are the power-hungry leaders of their species and desire to invade Earth along with any other planet they can find, both serve as the BigBad of the final arc of a season, and both led to an EnemyMine between Ben and Vilgax.

!Villains
!!Arc Villains
[[folder:Vilgax]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/rb_vilgax.png]]
[[caption-width-right:350:''"I am Vilgax, [[RedBaron Conqueror of Worlds]]!"'']]
->'''Voiced by:''' Creator/YuriLowenthal

!!Independent Villains

->'''Voiced by:''' Creator/JohnDiMaggio

%%ZeroContextExamples are not allowed on wiki pages. All such examples have been commented out. Please add proper context before uncommenting them; "See Trope X" is not considered context. Thank you.

[[center:[[WMG:[-''Characters/Ben10'' [[Characters/Ben10 franchise character index]]\\
[[Characters/Ben10MainCharacters Main Characters]] ([[Characters/Ben10BenTennyson Ben Tennyson]]) | [[Characters/Ben10OmnitrixAliens Omnitrix Aliens]] | [[Characters/Ben10SupportingCharacters Supporting Characters]]\\
Villains premiering in: [[Characters/Ben10VillainsOriginalSeries The Original Series]] ([[Characters/Ben10Vilgax Vilgax]], [[Characters/Ben10ForeverKnights Forever Knights]]) | [[Characters/Ben10VillainsAlienForce Alien Force]] | [[Characters/Ben10VillainsUltimateAlien Ultimate Alien]] | [[Characters/Ben10VillainsOmniverse Omniverse]]\\

[[foldercontrol]]

[[folder:Gax]]
!!'''Gax''' (RE-37)
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/gax_0.png]]
->'''Voiced by:''' Creator/YuriLowenthal

Gax is the first new alien form of the reboot series seen that was not displayed before in any of the shows. Gax is the Omnitrix's DNA sample of a Chimera Sui Generis from the planet Vilgaxia. Yes, as in ''Vilgax's species''.

* AwesomeButImpractical: Ben's lack of restraint causes tons of collateral damage with both his SuperStrength and EyeBeams.
* CastingGag: It's hard to overlook the irony that Gax is played by [[Creator/YuriLowenthal Ben Tennyson]] himself, specifically teenage Ben from the classic continuity. Moreso given that Gax is Vilgax's other half and is returned to its original owner.
* CombatTentacles: His arms can unravel into multiple tentacles.
* {{Cthulhumanoid}}: His appearance as a Chimera Sui Generis.
* DrunkWithPower: Gax becomes an instant hit with Ben as soon as he sees how powerful he is. Given how Ben has historically favored Four Arms and Humungousaur, it's not a huge surprise.
* {{Expy}}: An overpowered alien with CombatTentacles that Ben falls in love with, but it gets destroyed from the Omnitrix? Almost reminds you of Feedback.
* EyeBeams: Has powerful eye beams that can ignite and outright vaporize objects and easily carve stones.
* KnightOfCerebus: His appearance in the series marks it taking a more dramatic turn.
* MythologyGag:
** His whole existence is one of when Ben got Blitzwolfer for the first time; he remarks how he should've let Vilgax touch the Omnitrix to obtain his DNA. ''Several'' years later (and in a new continuity), he finally can transform into a Chimera Sui Generis.[[note]]WordOfGod is that Classic!Ben lost the ability to turn into a Chimera Sui Genesis after Vilgax overloaded the Omnitrix in their first battle[[/note]]
** When the Omnitrix changes Ben into Gax in midair, Ben wonders if Gax can fly. In ''Alien Force'', Vilgax could fly due to absorbing the power of heroes from the planets he conquered. It was also implicitly where he gained EyeBeams, but Gax possesses it naturally.
** Gax is also heavily based on Vilgax's original appearance before he got cybernetics, including his original coloration for his skin, head tube, and mace ball shoulder pads.
* NeverTheSelvesShallMeet: Non-TimeTravel example: When "Vil" touches the Omnitrix on Gax, it literally sucks the form off of Ben and Vil returns to his full glory as [[BigBad Vilgax]].
* RedEyesTakeWarning: Notable that, unlike other Omnitrix aliens, he does not have Ben's green eyes.[[note]]Even the [[WesternAnimation/Ben10 original series]], which did not have the green eyes theme, had no Omnitrix aliens with red eyes except for Ghostfreak in the opening (which serves as foreshadowing for Zs'Skayr).[[/note]]
* SealedEvilInACan: Half of Vilgax is sealed within the Omnitrix, although Gax himself isn't evil.
* SpikesOfVillainy: Although he ''himself'' is not evil, just his genetic source.
* SuperpoweredEvilSide: Downplayed; apparently aware enough to give Ben his name. Even though Ben has a notable PowerHigh using him he's just more reckless with him, not outright evil.
* SuperStrength: Manages to ''crack'' a mountain.
* SuperToughness: Appears to be as durable as Vilgax was in previous incarnations. He also has no difficulty fighting one of Animo's mutants [[ConvectionSchmonvection on an active lava flow]].

[[folder:Overflow]]
!!'''Overflow''' (RE-01)
[[quoteright:230:https://static.tvtropes.org/pmwiki/pub/images/overflow_re.png]]
->'''Voiced by:''' Creator/MaxMittelman

Overflow is the Omnitrix's DNA sample of a Cascan from the planet Cascareau. He replaces Ripjaws as one of Ben's original ten aliens for the reboot.

* AnIcePerson: In his Omni-Enhanced form.
* MakingASplash: He possesses hydrokinesis.
* NighInvulnerability: His exoskeleton is extremely durable.
* NotQuiteFlight: He can propel himself into the air by blasting the ground. For obvious reasons, this limits his flight ceiling.
* ShoulderCannon: A huge pair appear every time he uses the Omni-Enhanced form.
* SuperNotDrowningSkills: Can breathe underwater.
* SuspiciouslySimilarSubstitute: He's basically Water Hazard, but with a new name and different species. Some WordOfGod bits suggest his and Water Hazard's species are related genetically.
* ThisLooksLikeAJobForAquaman: The reason for him replacing Ripjaws is likely to avoid this, as his set of powers allow him to be useful in more situations than Ripjaws. Ironically this makes him ill-suited for situations that Ripjaws excelled at, such as underwater combat.

[[folder:Shock Rock]]
!!'''Shock Rock''' (RE-49)
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/latest_1_35.png]]
->'''Voiced by:''' Creator/DavidKaye

The second new alien form of the reboot series, a being of pure energy given structure through rocky armor plating. He is the Omnitrix's DNA sample of a Fulmini from the planet Fulmas.

* TheAce: So far in the Reboot, he has shown to be Ben's most powerful alien (with the exception of [[spoiler:[[EleventhHourRanger Way Big]]]]): not only he has strength and durability similar to Four Arms and Diamondhead, but can also absorb energy, create weapons and give a boost to the other Omnitrix's alien.
** In "The 11th Alien" he was able to go toe to toe with Vilgax on his own, something none of Ben's other transformations could (not even when enhanced by Shock Rock himself).
* BadassCape: When the High Override took control of him, he gave Shock Rock one similar to his own.
* BattleBoomerang: He can use his powers to create a "Bluemerang" out of pure energy.
* BrainwashedAndCrazy: When the Fulmini hone in on Shock Rock's location, The High Override begins to communicate with Ben telepathically. This culminates in Ben as Shock Rock [[DarkestHour becoming his minion]], fighting Gwen and Max in his stead.
* ConservationOfNinjutsu: Shock Rock, a lone Fulmini on his own? Gives Vilgax the toughest fight he's ever had. A whole army of Fulmini? Vilgax knocks them down like bowling pins without effort. Might be justified by how Shock Rock is a [[TheAce prime version of a Fulmini,]] probably second only to the High Override.
* DiscardAndDraw: Even though he's billed as Ben's eleventh alien, he replaced Upgrade in the Omnitrix's loadout.
* TheDreaded: Vilgax is terrified when Ben activates the form, claiming Ben would not only destroy himself but the entire planet. Considering Shock Rock was able to defeat Vilgax, it's easy to see why Vilgax would want to dissuade Ben from using him. Later, it turns out Shock Rock ''himself'' wasn't the threat, it was that his existence was a beacon for the Fulmini empire which destroy planets to harvest their energy.
* EnergyAbsorption: He can absorb energy and fire it back at his opponents.
* EnergyBeings: Shock Rock is living electricity with rocky armor.
* EquippableAlly: Before becoming a form by himself, Shock Rock manifested as enhancements to Ben's other forms, granting them Shock Rock's powers in addition to their own.
* GoodColorsEvilColors: He is usually a bright, nice shade of blue. When the High Override controls him, he turns a slightly sick-looking shade of purple.
* PowerIncontinence: Subverted; at first it seemed like his powers were beyond Ben's control, but really it was Vilgax scheming with the Weatherheads to make him think that so he'd give up the Omnitrix.
* ShockAndAwe: He's made of electricity and can use it as a weapon.
* ShapeshifterWeapon: He eventually learns how to shapeshift his arm into a chainsaw.
* ShapingYourAttacks: He can shape his electricity, such as creating a "bluemerang" out of energy.
* UnwittingInstigatorOfDoom: Ben using Shock Rock and flaunting Fulmini energy with his "Omni-Enhanced" aliens allowed the rest of the Fulmini species to detect him and plan a full-scale invasion using the Omnitrix as a gateway.

[[folder:Slapback]]
!!'''Slapback''' (RE-81)
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/latest_2_7.png]]
->'''Voiced by:''' Creator/ToddHaberkorn

A new alien Ben acquires in season 3. He is the Omnitrix's DNA sample of an Ekoplektoid from the planet Ekoplekton.

* AppropriatedAppellation: Gwen was the one who coined the name "Slapback". Ben didn't like it at first, but eventually, he grudgingly admitted how fitting it was, and accepted it as a name.
* AsteroidsMonster: His basic power set is that every time his back is struck he becomes two doubles who are half the size but twice the weight, strength, and durability.
* BigOlEyebrows: Which appear to be made of metal.
* MadeOfIron: He literally looks to be so and is quite durable. This only goes up the more he multiplies.
* PintSizedPowerhouse: At four copies he's basically a bunch of super-strong living cannonballs.
* SelfDuplication: Like Ditto and Echo Echo before him with the unique spin that the doubles get smaller but stronger, heavier, and more durable. This limits how many he can reasonably make but at the same time reduce the risk of copies being harmed.

[[folder:Surge]]
!!'''Surge''' (RE-173-176)
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/surge_2.PNG]]
->'''Voiced by:''' Creator/FredTatasciore

An alien unlocked by Ben in season 5 who's DNA comes from a hivemind species known as Xerge.

* BroughtToYouByTheLetterS: Is a member of the Xerge species, and his body is in the shape of an X.
* ChuckCunninghamSyndrome: Despite his DNA never explicitly being removed from the Omnitrix, he doesn't show up in Ben Gen 10 along with all the other aliens, one episode after his debut.
* HiveMind: The Xerge all share a collective consciousness when combined, with one being the dominant Xerge.
* TheLoad: Surge is practically useless on his own and needs other Xerge to do anything substantial in a fight.
* SynchronizedSwarming: The primary power of his species is configuring into basically anything when in groups.
* TronLines: Has these, similar to Upgrade.
* ZergRush: The second biggest strength of his species is unceasing attacks in endless swarms.

!Supporting Characters

[[folder:Sez Family]]
A family consisting of a grandmother named Maxine and her two grandkids, Simon and Ryan, who're likewise on their own roadtrip and likewise have had their share of supernatural weirdness.

!! In General
* SimilarSquad: To Max, Ben and Gwen. Both drive [=RVs=], have a member with "Max" in the title, heck Max and Maxine even dress similar and, of course, one of the family has a power on them activated through an accessory (Ben his watch and Simon his backpack). Though whereas Ben and Gwen work together, Ryan hardly cares much of what his brother gets into and sees looking after him as just another chore despite, you know, his little brother being able to summon a mech on command.

!! Maxine
->Voiced by: Audrey Wasilewski (1st Appearance), Debra Wilson (2nd Appearance-Present)

Ryan and Simon's grandmother.

* CoolOldLady: Like Max, she seems to take a lot of the craziness in stride.
* DistaffCounterpart: Acts as one to Max.

!! Simon
->Voiced by: Creator/DebiDerryberry (1st Appearance), Ogie Banks (2nd Appearance), David Mudd (3rd Appearance-Present)

The younger of the Sez siblings, somehow acquired a mech that he controls.

* BrattyHalfPint: He's only six, but is ''very'' temperamental and heaven help you if you get him too riled.
%% Doesn't explain what the reation is. * BerserkButton: Do NOT call him annoying or act like a jerk to use him. Ben got to experience it whenever he lost patience or threatened to end his friendship with Simon.
* ChildProdigy: Downplayed. He knows a lot of interesting trivia and is able to use his mech suit pretty easily.
* ItsAllAboutMe: As he puts it, he's annoyed adults telling him what to do despite a lot of his complaints being childish (Eating certain foods, not to annoy people, etc). Justified as he's still very young and doesn't know much better.
* MirrorCharacter: With Ben, the two tend to be annoying to their more mature family (cousin and brother respectively) and they do bond a bit over it. This thing though is that Simon is still young and not mature enough yet to realize that his actions can tend to annoy others. Also doesn't help that he can be hard to talk down once he's angered.
* MotorMouth: Talks a mile a minute, of course he is just a young kid, but still.
* PintSizedPowerhouse: Again six, but has the power of a mech on his side and no qualms using it to get his way.
* PunnyName: Simon Sez, "Simon Says", har har.
* RocketPunch: Can fire rockets out as projectiles.
* ShadowArchetype: Basically Ben if he didn't have restraint in using his power as he tend to cause ''a lot'' of damage once he's in the mech with little regard for others wellfare. [[spoiler:The Forever Knight recruits him for this exact reason.]]
* SpoiledBrat: Pretty obvious Maxine dotes on him too much as a lot of the problems when he's involved are always due to him throwing a tantrum.
%%* TransformingMecha: Can summon one from his backpack.
* TheUnreveal: There's virtually ''no'' explanation how he got his mech, it's just treated as a normal thing in the series. All that is known about it is that Billy Billions owned the factory that created the model of his mech suit. Which also means Billy can take control over the armor at times and make Simon do his bidding (though it never lasts since Simon is still the one piloting it).

!! Ryan
-> Voiced by: Creator/JoshKeaton (1st Appearance), Ogie Banks (2nd Appearance), Charles [=DeWayne=] (3rd Appearance)

The older of the Sez siblings.

* AloofBigBrother: To Simon. Even when Simon's rampaging around in his mech, this hardly phases him and he seems more annoyed whenever it happens.
* JerkWithAHeartOfGold: As aloof and antisocial he can be, he helps Ben handling Simon and even plays video games with him, smiling for the first (and this far only) time in the series. He also does end up acknowledging Gwen when they're stuck in traffic (albeit as they're about to leave, causing her more annoyance than joy).
* LoveInterest: For Gwen, though one sided on her end.
* MoralityPet: To Simon. A few words from him and Simon stops causing trouble. Like Gwen with Ben, he knows how to handle his little brother's tantrums.
* ObliviousToLove: Gwen is infatuated with him, but Ryan doesn't even bat an eye to her advances.
* PhoneaholicTeenager: A good chunk of the time, most of his appearances will just be him checking his cell phone.
* TheStoic: Anti-social to a fault and rarely without a bored expression on his face.

[[folder:Vin Ethanol]]
[[quoteright:646:https://static.tvtropes.org/pmwiki/pub/images/vin_pic_9.png]]
->'''Voiced by:''' Creator/DavidSobolov
An associate of Lagrange who cares about family.

* AffablyEvil: While he associates with Lagrange [[spoiler: and later Forever Knight]], he's still a very personable guy.
* CoolCar: Uses a souped-up car for illegal racing, complete with a "family" button on the dashboard.
* {{Expy}}: Of Creator/VinDiesel, particularly his role in Franchise/TheFastAndTheFurious series.
* HeelFaceTurn: [[spoiler: Joins the Tennyson family as an HonoraryUncle in the Season 3 finale]].
* PunchClockVillain: Is part of Lagrange's crew, but isn't malicious about it.

[[folder:Phil Billings]]
->'''Voiced by:''' Creator/JohnDiMaggio

* AdaptationalHeroism: Quite possibly the biggest example in the series. Instead of a conman who freed dangerous aliens only to capture them again to earn a quick buck, this Phil has become an honest engineer and one of Team Tennyson's biggest allies, to the point where he's a frequent GuestStarPartyMember.
* AdaptationalNiceGuy: He is a fine fellow who worries about his coworkers' safety. He also gets along well with Ben and Gwen.
* FreudianSlip: He almost calls the Omnitrix by name before catching himself, even though Ben haven't revealed it to him, suggesting he knew about the watch beforehand.
* GadgeteerGenius: He is able to study the Omnitrix, an extremely complex piece of alien technology, and discover what its problem is and how to fix it. He also built the Omnicopter, allowing the Tennyson family to gallivant all over the world.
* InNameOnly: While he shares a few traits with his Classic self, this Phil is ultimately a completely different character.

[[folder:Tetrax Shard]]
->'''Voiced by:''' Creator/ToddHaberkorn

* AdaptationalVillainy: Since [[spoiler:Vilgax didn't destroy his planet]] in this version, he is still an amoral bounty hunter.
* BondBreaker: While calling him, Kraab and Sixsix TrueCompanions or even friends would be pushing it (as seen during their interaction in "Bounty Ball") it's implied they have worked together for quite some time and acted as a team on several missions. Due to Tetrax betraying the other two in "Mutiny for the Bounty", it's doubtful they'll work together ever again.
* ChainedHeat: With Ben in " Mutiny for the Bounty ": it's a subversion, since it was Tetrax that chained them together to bring Ben to his client and could have released them anytime. The device holding them was also designed to counter Ben's transformations, like creating two more cuffs when he turned in Four Arms.
* ExactWords: He captures Gwen and uses her as a hostage to force Ben to surrender, promising he will let her go if the child does. After Ben is captured, he drops her from the train roof they were fighting on.
-->'''Ben:''' "You said you'd let her go!"
-->'''Tetrax:''' "I ''did'' let her go."
* KickTheDog: His ExactWords example above.
* KnowWhenToFoldEm: After Vilgax gives him, Kraab and Sixsix a CurbStompBattle and sends them packing through their own teleporter, they wisely decide to not go back to the battlefield.
* HealingFactor: Possibly averted: in "Mutiny for the Bounty" Kraab shatters one of his arms and he doesn't regrow it before leaving.
* IOweYouMyLife: After Ben helped him fight Kraab and Sixsix (who Tetrax double-crossed to keep all the bounty to himself) he lets Ben go. He is quick to add that it's only for this time.
* TheLeader: Of the group he forms with Kraab and Sixsix. After "Mutiny for the Bounty" it's safe to assume their group has been disbanded for good.
* OnceASeason: Tetrax is a fairly recurring villain, having shown up once every season.
* OnlyInItForTheMoney: Which makes him unpredictable: one episode he could be helping Ben fight Vilgax, in another trying to hunt the kid.
* NothingPersonal: He said it verbatim to Ben in "Bounty Ball", explaining they were only hunting him for money. Ben (as Grey Matter) argued back that attacking his person is the definition of personal.
* ScrewThisImOuttaHere: He and the other bounty hunters run away when Shock Rock proves too much for them.
* SuperReflexes: Enough to keep up with [[SuperSpeed XLR8]], much to Ben's surprise.
* TeleportGun: He uses it to quickly arrive and leave a scene.
* VaguenessIsComing: When they give up on the hunt, he warns Ben it's only the beginning.
--> "You're no longer worth the trouble anymore, flesh child! [...] We just wanted money! There will be others who want far more from you!"
* WildCard: He has nothing personal against Ben, therefore it's impossible to guess if he will be on his side or not when they meet.
* TheWorfEffect: He, SixSix and Kraab are quickly defeated by Vilgax, showing what kind of threat the conqueror is.

[[folder:Glitch]]
->Voiced by: Creator/TaraStrong
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/glitchbenpose.png]]
[[caption-width-right:350:Glitch as he first appeared.]]

[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/glitchs3_00.png]]
[[caption-width-right:350:After merging with the Rustbuggy.]]
He once was [[spoiler:Upgrade]], before the fight with Vilgax in "Omni-Tricked" almost destroyed him, forcing him to fuse with [[spoiler:Ben's DNA]]. Since then he became the GeniusLoci of [[spoiler:Omnitrix]], until he escaped in "Innervasion" and joined [[spoiler:Team Tennyson]].

* BrutalHonesty: He dislikes Vilgax, but had to agree that Ben is "kinda useless" without his alien forms, mostly due to Ben's cockiness carrying over to him.
* CoolCar: He transformed the Tennyson Go-Kart in one [[spoiler:by merging with it]].
* EmpathicShapeshifter: Fused with the Rustbuggy he changes to match the Omnitrix or Antitrix alien driving him.
* GeniusLoci: Being a {{Technopath}}. He has a large control of [[spoiler:the Omnitrix]], even modifying its structure to fight off intruders [[spoiler:like the Fulminis]].
* HalfHumanHybrid: His DNA is a mix of a [[spoiler:Galvanic Mechamorph]] and a human [[spoiler:(Ben)]].
* HappilyAdopted: [[spoiler:Grandpa Max]] immediately declared him a new member of their family.
* HeroicSacrifice: [[spoiler:Barely subverted]]. ''Twice''.
* IKnowYoureInThereSomewhereFight: To Ben [[spoiler:when the High Override put Shock Rock under his control]].
* MrExposition: He is the one who explained how [[spoiler:the Fulminis]] were able to use Shock Rock and the Omni-Enhanced forms to [[spoiler:open a gateway to invade Earth]], as well as how to stop it.[[spoiler:He also explained to Gwen and Max how to access the alien forms]].
* PaletteSwap: Looks exactly like [[spoiler:Ben, only with Upgrade's color scheme]].
* SixthRanger: Joined the [[spoiler:Tennyson family]] at the end of Season 2.
* SuspiciouslySimilarSubstitute: After Ben lost [[spoiler:Upgrade in the season 1 finale, here comes a new {{Technopath}} to make up for it]]. Of course, it's actually a weird subversion, since [[spoiler:he '''was''' Upgrade, and Ben can't transform into him. He is actually out of the Omnitrix now, acting as a SixthRanger]].
* {{Technopath}}: Just like when he was [[spoiler:Upgrade]].
* WalkingSpoiler: The way he was created and his role in the season 2 finale are a pretty big plot point.

[[folder:The Incurseans]]

In the reboot, the Incurseans appear in ''WesternAnimation/Ben10VersusTheUniverseTheMovie'' as galactic enforcers.

* AdaptationalHeroism: [[spoiler:Instead of being ruthless conquerors like in the old continuity, the Incurseans here function more as an intergalactic police force and jury. They are also quick to help Ben return to Earth once he proves he isn't Vilgax by saving them.]]

[[folder:Ben 10,000]]

* AdaptationalAngstUpgrade: Unlike the original Ben 10,000s, this version has [[AchillesInHisTent pulled out of active superheroics]] after an incident where his Grandpa Max died.
* AdaptationPersonalityChange: This version of Ben 10,000 NeverGrewUp and is a ManChild living out of the dump with Hitch and a few dummies made out of trash.
* AdaptationalWimp: Lacks the access to the Master Control his original counterparts had, and is thus just as prone to turning into the wrong alien as the 10-16year-old versions.
* TheAllegedCar: His Omnitrix barely functions, and at one point leaves him [[BodyHorror stuck between human and Spidermonkey]].
* BeardOfSorrow: His facial hair is reimagined as this, and [[spoiler:he shaves it off once he gets out of the funks]].
* CompositeCharacter: Takes on a few traits of Alien Force-era Ben, such as the habit of drinking Mr. Smoothies, the ability to turn into Spidermonkey and [[spoiler:his look after cleaning himself up]].
* HesBack: Resolving the invasion by the Xerge [[spoiler:leads Ben to clean himself up and get back into active heroism]].

!Villains
!!Arc Villains
[[folder:Vilgax]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/rb_vilgax.png]]
[[caption-width-right:350:''"I am Vilgax, [[RedBaron Conqueror of Worlds]]!"'']]
->'''Voiced by:''' Creator/YuriLowenthal

* TheAce: Of his own species, since the Omnitrix transformations are all ''genetically optimal'' versions of their origins. It also helps that the "sample" for Ben's alien transformation as Gax is originally a fraction of Vilgax's [=DNA=] ''and'' power stored within the Omnitrix.
* AdaptationalBadass: This Vilgax is one of the strongest, most threatening portrayals since the original series. Not only does he have his EyeBeams as part of his original powerset, but he now also displays the ability to manifest CombatTentacles. He also displays the more cunning planning ability of the sequel series Vilgaxes.
* AdaptationalIntelligence: While Classic Vilgax was by no means dumb, he's a great deal smarter than Classic Vilgax both in terms of scientific knowledge and tactical strategy. Reboot Vilgax is a scientific genius who worked for Azmuth and assisted him in constructing the Omnitrix, compared to Classic Vilgax who at one point didn't even know how to operate the Omnitrix until Ben taught him how. In addition, while Classic Vilgax was a ManipulativeBastard in his own right, he wasn't quite TheChessmaster that Reboot Vilgax is who is capable of orchestrating complex plans seasons ahead of their fruition, like manipulating Kevin into constructing the Antitrix.
* AdaptationalNiceGuy:
** Oh, he's still a power-hungry conqueror, but he's nowhere near as vindictive as the original. While his goals often bring him into conflict with Ben, he treats him more like a nuisance than an ArchEnemy. He's even willing to work with Ben to defeat a common foe, if only out of pragmatism and self-preservation. It isn't until his return in Season 4 that Vilgax becomes more vindictive against Ben, like his original counterpart.
** It's also worth noting that he initially had no interest in taking the Omnitrix, instead wanting to destroy it to be sure his powers wouldn't be trapped inside it again. After Ben was apparently crushed by the Omnitrix, he was more than happy to leave and resume conquering the galaxy. It's only after he realizes how powerful it can make its user that he decides to take it.
--->'''Vilgax:''' It seems I have underestimated the power of the Omnitrix. Giving a mere child the power to challenge me, Vilgax the Conqueror. I think I'll take it!
* AdaptationOriginConnection:
** Inverted: In the Original Series, Vilgax and Max first fought each other when the latter was still a young man, decades before Ben was even born. In the reboot, they had no clue about each other's existence before "Vil" comes to Earth to retrieve his missing half.
** Played straight in regards to the Omnitrix and Azmuth. In the Classic Continuity, he simply saw the Omnitrix as a tool for conquest and Azmuth was just one of his many enemies. [[spoiler:In this version, he was Azmuth's friend and student and helped create the Omnitrix.]]
* AlwaysABiggerFish: The Fulmini Empire are this for Vilgax. Despite being a GalacticConqueror himself, even Vilgax regards the Fulmini with fear and their ruler, the High Override, is far more powerful than him. Their arrival forces him into an EnemyMine with Ben.
* AndIMustScream: [[spoiler:When he is banished into the Null Void. Unlike the Classic Continuity, where it was a place full of dangerous creatures (which really wouldn't be a problem for [[TheJuggernaut Vilgax]]) in this version it's a completely blank space, where time is frozen and you are drifting forever.]]
* BigBad: The overall antagonist of the series, serving as the FinalBoss of Season 1, the main villain of Season 2 and Season 4's "WesternAnimation/Ben10VersusTheUniverseTheMovie."
* BigBadEnsemble: With the High Override for second season finale, "Innervasion", but Vilgax regards the Fulmini Empire as the greater threat and teams up with Ben to stop them.
* BigNo: When he realizes Ben can change into a Galvanic Mechamorph and stop his ship from taking off.
** He gave another one [[spoiler:when The High Override trapped him in the Null Void]].
* BroughtDownToNormal: Prior to the series, Vilgax was apparently stripped of his powers, which were stored in the Omnitrix in the form of "Gax". It doesn't stick, since he returns to full strength in the "Omni-Tricked" special.
* CanonCharacterAllAlong: Originally introduced himself as "Vil" after meeting Ben as "Gax". He is initially nothing like his old series self, being a shrivelled husk in a cloak, until he steals Gax from the Omnitrix and returns to his more imposing true self.
* CassandraTruth: He sternly warns Ben against using Shock Rock after unlocking his DNA, saying that it would tear not only him apart, but the rest of his world as well. Since he'd already deceived Ben once before, his warning falls on deaf ears, but Vilgax is later proven to be right by "Innervasion", where Shock Rock's activation lured the Fulmini Empire to Earth.
-->'''Vilgax''': ''Do not activate that alien!'' It will tear you apart and the rest of your world along with it!
-->'''Ben''': Only one way to find out, Mr. Suddenly-Sensitive Bad Guy.
* CastingGag: It's hard to overlook the irony that this Vilgax is played by [[Creator/YuriLowenthal Ben Tennyson]] himself, specifically teenage Ben from the classic continuity.
* CharacterDevelopment: Inverted. When he crashes on Earth, he is a diminutive shell of his former self wearing rags and he humbly asks Ben to call him "Vil" while teaching him how to use Gax. However, he simply wanted to steal back the power that was taken from him and sealed in the Omnitrix. As soon as he does this, he returns to being the Vilgax we know.
* TheComicallySerious: Like usual, the only funny thing about Vilgax is how devoid of humor he is, which can make him frustrated when dealing with the antics of Ben or lesser evil partners like Dr. Animo and Zombozo.
* CombatTentacles: His arms are actually formed by five tentacles each compressed together. He can detach them and use each one independently, allowing him to hit multiple targets at once or to trap opponents.
* CompositeCharacter: His overall appearance and [[NighInvulnerable inability to stay down]] are taken from the first series, his facial design of bigger eyes and visible but not too large mouth are taken from ''Alien Force'' / ''Ultimate Alien'' era as well as the EyeBeams he had. A toy also depicts him with a sword, much like said incarnation. His Alien-V form is pretty much a dead-ringer for Malgax (Vilgax using Malware as armor) in ''Omniverse''.
** He takes cues from Zs'Skayr, with part of him being trapped in the Omnitrix as an alien form Ben uses (Ghostfreak and Gax respectively) and him seeking that part out in order to become whole. In a similar vein, this also brings to mind Malware, who steals an alien form that Ben really liked from the Omnitrix (Malware stole Feedback, while Vilgax stole Gax) as well as the aformentioned Malgax design for Alien-V.
** It's revealed in ''Ben 10 Versus the Universe'' that [[spoiler:he's a former student of Azmuth's, much like Albedo or Myaxx in the Classic Continuity]].
** It is Vilgax who ends up transforming into an AllYourPowersCombined form as [=AntiVilgax=], much like Kevin's Kevin 11 form in the original series.
* ContinuityNod: His second appearance and onward features him with several blackened patches of skin, from the burns he got from falling into lava from his fight with Ben.
* CurbStompBattle: He's usually on the giving end of these, thanks to his tremendous strength and experience. Tetrax, [=SixSix=], and Kraab are ultimately no match for him, and he soundly defeats Ben in their first fight. The trope is flipped on him for once when Ben briefly unlocks Master Control.
* CurbStompCushion: While he clearly holds the upper hand for most of their rematch, Ben manages to get in some good hits by using his unpredictable transformations to catch Vilgax off-guard. Almost all of his battles with Ben in Season 2: the new [[SuperMode Omni-Enhanced forms]] allowed Ben to better hold his own, but Vilgax was still clearly the stronger fighter (plus Ben often had help from others).
* DeadpanSnarker: When he and Ben are forced to team-up against the Fulmini, Ben whines about being totally useless.
--> '''Vilgax''': First intelligent thing you've said all day.
* DidntSeeThatComing: This is often the cause of Vilgax's defeats. Because he quickly adapts to the Omnitrix's aliens, Ben has to either bust out a new alien he hasn't encountered yet or rely on another outside factor. Vilgax didn't realize Ben could transform into a Galvanic Mechamorph, which cost him his ship. He was also caught off guard by the Omni-Enhancements and Shock Rock's extraordinary power. He also underestimated Dr. Animo, who changed into Rath, in order to take him on directly.
* EnemyMine: [[PragmaticVillainy Knowing full well how dangerous the Fulmini Empire is]], he decided to ally with Ben to stop their invasion.
* EvilGenius: This Vilgax was once Azmuth's assistant, displaying a level of scientific ingenuity the classic Vilgax never had.
* EvilMentor: Vilgax and Ben develop a rather twisted student-mentor relationship throughout the second season, and is shown to be more knowledgeable of the Omnitrix than Ben, occasionally teaching him of its capabilities.
* EvilVersusOblivion: Why he joins forces with Ben in fighting the Fulmini, a destroyed world is of no use to Vilgax the Conqueror.
* EyeBeams: Carried over from ''Alien Force'' and slightly modified, Vilgax can shoot lasers from his eyes.
* GoodScarsEvilScars: His ship falls into a volcano in the season one finale, leaving him with several burned patches of skin in season two... which he's not very happy about.
-->'''Ben''': Hey, Vilgax! Nice tan line you got there!\\
'''Vilgax''': '''TAN LINE?!'''
* GreaterScopeVillain: He's trapped in the Null Void and thus absent for the third season, but ''Ben 10 versus the Universe'' reveals he was the one who subtly manipulated Kevin into creating the Antitrix, which was a major plot point of Season 3. When he escapes the Null Void, he steals the Antitrix from Kevin for himself.
* HesBack: A villainous version. He was severely depowered and left withered and frail. Upon regaining his power, he returns to being TheDreaded galactic conqueror the universe knows him as.
-->'''Vilgax''': '''I'M VILGAX''' '''''ONCE MORE!'''''
* HowTheMightyHaveFallen: In this continuity, his physical strength and abilities were stripped from him and sealed in the Omnitrix as a form Ben only unlocks when Vilgax approaches Earth. Without "Gax", "Vil" is puny and weak, wears a tattered robe, and ''appears'' to be greatly humbled.
* HumongousMecha: He used one in the first part of "The Innervasion". It proved to be extremely durable (Omni-Enhanced Four Arms couldn't scratch it), but was taken down by Shock Rock [[spoiler:thanks to The High Override's thoughts assisting him]].
* IllKillYou: "I will destroy you and then, I will destroy this world!"
* IKnowYoureInThereSomewhereFight: [[NotMakingThisUpDisclaimer No, really]]: when Ben as Shock Rock [[spoiler:was under the influence of the High Override]]. Of course, he made it in his own way, offering to leave Earth alone in exchange for the [[spoiler:Omnitrix core]].
* KnowWhenToFoldEm: This Vilgax, as part of his more intelligent and cunning nature, is quite willing to just cut his losses and retreat for the time being when things are going south.
* ALighterShadeOfBlack: Compared to the High Override, Vilgax is less of a threat enough that Ben reluctantly teams up with him.
* {{Leitmotif}}: He's usually accompanied by a sinister choir and tribal drum riff.
* ManipulativeBastard:
** He serves as an EvilMentor to Ben, feigning innocence, teaching Ben about the Omnitrix and coaching Ben on how to use the Gax form. He later reveals his true colors and absorbs the Gax form for himself.
** [[spoiler:With the help of the Weatherheads]] he successfully convinced Ben that using the Omnitrix was becoming a danger for the whole Earth and to give it to him. [[spoiler:If it wasn't for Gwen]] Vilgax would have won right there.
* NighInvulnerability: He was submerged in lava at the end of Season 1. He only got some minor burns from it.
* NotInThisForYourRevolution: When he warns the Tennysons about [[spoiler:the Fulmini invasion]], Ben wonders why he cares about Earth. Vilgax replies he doesn't, but [[PragmaticVillainy they are a threat to his own plans for galactic conquest and his wish to obtain the Omnitrix]].
* NotMeThisTime: After most of what was left of Vilgax's HumongousMecha and the car batteries of the campers went missing, Ben quickly accused Vilgax. He merely lampshades how he was still trapped in the energy box Shock Rock created. While Ben suspects he used autopilot or A.I., [[spoiler:the culprit was actually Ben himself, who in his sleep was being controlled by The High Override to build a beacon to help the Fulminis invade Earth]].
* NotSoAboveItAll: After Grey Matter got zapped trying to break the energy cage Vilgax was trapped in, he [[FreezeFrameBonus actually cracked a smug smile]].
* OOCIsSeriousBusiness: When Ben unlocked Shock Rock in "The 11th Alien", Vilgax ''flipped'', warning Ben to not use it. When his words fell on deaf ears, he drops all pretense of trying to reason with Ben and savagely attacks him. With the reveal of the Fulmini Empire in the season finale, his fears weren't unfounded.
** Also in "The Innervasion" part 2, where he tells Ben to escape while he'll hold off the robot chasing him. [[spoiler:Because Ben was Shock Rock at the time, and the robot was trying to absorb his energy to send Earth's coordinates to the invasion force of the Fulminis.]]
* TheReasonYouSuckSpeech: Gave one to Ben in "The Innervasion" when Ben was reluctant [[spoiler:to seal the Omnitrix's Chamber to stop the Fulminis, as this would have made him unable to transform]], accusing him to prefer his powers over the safety of his planet.
-->"I always knew [[IdiotHero you were too childish to do the smart thing!]] Now I see you are also too selfish to do the right thing!"
* SealedEvilInACan: [[spoiler:In "The Innervasion" the High Override banishes him in the Null Void.]]
* TakingYouWithMe: Attempts this on Ben when he transforms into Upgrade and causes his ship to fall into a volcano.
-->'''Vilgax''': Very clever, boy! But now, you've doomed us both! You can't run, and the Omnitrix can't help you now! If my ship goes down, ''you'' go down with it!
* TantrumThrowing: When he realizes the robot Shock Rock built had completed its job on summoning the Fulmini, he starts angrily trashing the robot for failing to prevent their arrival.
* ThisCannotBe: Once Ben unlocks Master Control and he's on the receiving end of a CurbStompBattle for once.
-->'''Vilgax''': It's not possible to change this frequently!
** And he gets another one in the final battle with Ben in ''Ben 10 Versus the Universe''.
-->'''Vilgax''': You can't beat me! You're just a ''ten year old''! [...] ''Impossible''!
* TreacherousAdvisor: He instructs Ben on utilizing Gax, teaching him that mastering the abilities of a Chimera Sui Generis takes a lifetime of tempering. Despite it being a ruse to get close enough to steal his power back, he successfully got Ben to disintegrate a tree without causing a forest fire.
* VileVillainSaccharineShow: As mentioned before, he's a lot more threatening than you'd expect from a comedy-oriented reboot of the franchise.
* VillainTeamUp: In season 2 he forms several of these, allying himself with Animo, the Weatherheads, and Zombozo, hoping to use their technology to create and control his army of aliens from the Omnitrix. None of these alliances ended well.
* VocalDissonance: Being played by Creator/YuriLowenthal, while his voice is still deep, it's noticeably more high-pitched than the classic continuity compared to the growl of Creator/SteveBlum or the low voice of Creator/JamesRemar.
* WeUsedToBeFriends: [[spoiler:It's revealed in Ben 10 Versus the Universe, he used to be Azmuth's partner, assisting him in the creation of the Omnitrix before using the watch as a weapon, betraying Azmuth's intentions.]]

[[folder:The High Override]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/unknown_06.png]]
[[caption-width-right:350:"Who dares to defy the will of... The High Override?!]]
->'''Voiced by:''' Creator/FredTatasciore

The leader of the Fulminis, he invades other planets to search for energy to keep his homeworld together.

* AttackOfThe50FootWhatever: He is simply gigantic, around the size of Way Big.
* BadassBoast: "Entire galaxies bow before me, and you will be no exception."
** He gives another when he banishes Vilgax in the Null Void. " The High Override does not deal. He conquers!"
* BadassCape: A giant purple one made of energy.
* BatmanGambit: [[spoiler: When Shock Rock's DNA got unlocked, it kept sending signals towards Fulmas whenever Ben transformed. He was able to use it to influence Ben (who used him well enough by that point) in building a machine to create a passage through the Omnitrix to start the invasion.]]
* BigBadEnsemble: With Vilgax for Season Two. He's not revealed until the five-part finale, but every time Ben transforms into Shock Rock throughout the season, he's unwittingly advancing High Override's agenda.
* ConservationOfNinjutsu: Not him per say, rather his Fulmini army. Ben as Shock Rock, a lone Fulmini, was able to give Vilgax a very hard time. But a whole army of them? Vilgax knocks scores of them down like bowling pins.
** Possibly Justified, as Shock Rock is a peak Fulmini, while the soldiers are just lesser, seemingly mindless henchmen.
* EnergyAbsorption: He can absorb the essence of his soldiers to make himself more powerful. He can also do the opposite and give new life to them.
* EnergyBeing: Like all Fulminis, he is made of living energy.
* EvilVersusEvil: Vilgax is pitted against him, as he is a big enough threat even Vilgax doesn't want him around.
* {{Expy}}: Of Zs'Skayr. Both responsible for one of Ben's aliens going rogue (Ghostfreak and Shock Rock respectively), both are the power-hungry leaders of their species and desire to invade Earth along with any other planet they can find, both serve as the BigBad of the final arc of a season, and both led to an EnemyMine between Ben and Vilgax.
* GalacticConqueror: As his BadassBoast implies.
* KnightOfCerebus: He is not funny or silly in any way. Simply the fact that he was coming prompted Vilgax to ally with Ben.
* MindControl: He can take control of all his soldiers, as well as Ben when he is transformed in Shock Rock. [[spoiler:Ben was able to break free when the High Override ordered him to kill his family.]]
* PunyEarthling: He has a low opinion of humans, ever after Ben, [[spoiler:Gwen and Max]] transform with the Omnitrix to fight him.
** It's implied he has not a good opinion of any species apart from his own: when Ben turned into Omni-Enhanced Four Arms, he refers to him as "Useless Tetramand".
* SpellMyNameWithAThe: He always put a "the" in front of his title when talking about himself.
* ThroneMadeOfX: He builds one with hundreds of his own soldiers.
* WhoDares: His first physical appearance had him asking who dared to challenge him.

[[folder:Forever Knight]]
!!Forever Knight
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/forever_knight_8.png]]
->'''Voiced by:''' Creator/RogerCraigSmith

A mysterious individual who coats himself in high-tech medieval-looking armor and is currently studying Ben and Kevin.

* AdaptedOut: The rest of the organization seems to have been removed from the reboot, in favor of making the Forever Knight an independent antagonist with his own henchmen instead.
* BigBad: Of Season 3 in the reboot. He's been gathering several of Ben's villains for his plot to go back in time and prevent aliens from ever visiting Earth, thus allowing him to rule it uncontested.
* BigBadEnsemble: With Kevin 11 in season 3 after Kevin refused his offer to join him.
* BullyingADragon: He does that as a BatmanGambit in "Don't Touch": after Ben busts his armor, he has no way to avoid capture... so he gives Ben (who was Humungosaurus at the time) a [[ReasonYouSuckSpeech breaking speech]] in order to make the kid angry enough to hit him and send him flying. That's right, he actually used [[ATwinkleInTheSky Team Rocket's]] RunningGag to his advantage.
* BrainUploading: After being stuck in the past, he prevails by transferring his consciousness into his helmet and hijacking other bodies.
* CompositeCharacter: "Forever Knight" is now a single individual rather than an organization. He appears to be predominantly modeled after Driscoll, with all-covering armor, and forming a team (composed primarily of Ben's enemies) for his own purposes. However his color scheme is more similar to Enoch, with its emphasis on gray, dark red, and yellow colors. He is a robotic being much like the Forever Ninja. His status as a centuries old being with the goal to [[spoiler:protect Earth from potential invaders]] takes after Sir George from ''Ultimate Alien''.
* ContrastingSequelAntagonist: Unlike Vilgax and High Override, he's an independent Earth-based villain rather than an alien invader with an army behind him.
* DemotedToExtra: Much like Kevin, he goes from part of the BigBadEnsemble of Season 3 from just an occasionally recurring villain in Season 4.
* TheFaceless: We still haven't seen him without his helm. The most we saw of his face is when Humungosaurus cracked his helm in "Don't Touch" showing he is a young, Caucasian man.
* EnergyWeapon: His suit can create a mace, a whip and a shield.
* EvilMentor: Even more so than Vilgax, actively training kids into doing his bidding. And to his credit, they do get more threatening upon joining him, as evidenced by their reappearances before the finale being more imposing threats. [[spoiler: Ben is no exception either, as he wiped the floor with Charmcaster, Billy and Kevin simultaneously against him in a matter of ''seconds''.]]
* {{Expy}}: He hides in the shadows, observes things from a monitor screen, hides his face behind a mask, is an incredibly effective fighter whenever he steps out to do things himself, and has a mysterious agenda based around recruiting young people...including corrupting the show's hero. Sounds a lot like [[WesternAnimation/TeenTitans2003 Slade]], doesn't it?
* KnightOfCerebus: He is working toward constructing his own supervillain team, has no quirks or funny aspects, can hold his own against [[TheAce Shock Rock]] and [[TheBigGuy Humongosaur]], and delivered to Ben a harsh TheReasonYouSuckSpeech in their first meeting.
* KnightTemplar: [[spoiler:He legitimately feels that the Omnitrix only places Earth in greater danger, and his plan is to go back in time and prevent it from coming to Earth. Unfortunately, true to form when it comes to the Forever Knights in this franchise, he also is self-righteous enough to believe that he would make the ideal supreme ruler of Earth once this is accomplished.]]
* LegionOfDoom: He works toward building one throughout Season 3. [[spoiler:Uniquely for this trope, the hero ends up as one of the recruits.]]
* MythologyGag: Recruiting a team of Ben's enemies is exactly what the Forever King Driscoll did the in the Original Series. [[spoiler:This time, however, ''Ben'' is also part of the team.]]
* PoweredArmor: It looks like a classic medieval knight's and gives him the strength to fight Ben's alien more or less on equal term.
* TheReasonYouSuckSpeech: Gives a ''brutal'' one to Ben in "Don't Touch" when they first meet. What makes it so effective it that his arguments are actually doubts Ben had about himself in season 2.
-->'''Ben:''' You don't know me!\\
'''FK:''' Don't I? You are a child, in over his head, who is using borrowed power from technology you can't even control!\\
'''Ben:''' Um... you are wrong!\\
'''FK:''' And you think you know power? But without your technology, what would you be?\\
'''Ben:''' I...\\
'''FK:''' Just a weak, useless, scared little boy hiding from his own pathetic mediocrity! ''(All while Ben is increasingly telling him to stop)''
* SinisterSurveillance: Uses a drone to observe Ben's battle and decide which villain to recruit.
* SpellMyNameWithAThe: Subverted. Everyone in-series calls him "Forever Knight" instead of "the Forever Knight", as if it was his name, rather than a title.
* VillainTakesAnInterest: He is impressed by both Ben's and Kevin's alien forms and wishes to bring the two kids to his side.
** [[spoiler:"Roundabout" amps this up for Ben. Once Forever Knight put his plan into motion, he stopped caring for the other Squires and insisted on Ben being there to aid him. Justified as only Ben can find the signals Forever Knight is looking for, but even then, he completely disregards the rest of the team he gathered and goes as far as calling Kevin a knockoff of Ben despite complimenting Kevin's aliens earlier, proving he only really cared about bringing Ben to his side since the beginning. Even on the brink of losing, he orders Kevin to bring him Ben instead of telling him to come back.]]
* WellIntentionedExtremist: Played with. [[spoiler:He does believe his goal to RetGone all aliens from Earth is a righteous one, but also wants it so that he can become the unopposed supreme ruler of the world out of sheer arrogance and entitlement.]]
* WhyAreYouNotMySon: Non-family example, although the theme is present. He subjects Kevin (who has parental issues) to this to the end by comparing him to Ben, and his actions in Roundabout make it clear he favors Ben over him, even for the sake of an evil plan.

[[folder:Kevin Levin]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/reboot_kevin.png]]
->'''Voiced by:''' Creator/GregCipes

* AdaptationalBadass: Not him (see below), but the Antitrix's version of Grey Matter, Dark Matter: he is much taller than Ben's, strong enough to hurt Four Arms and capable to create some kind of crystal-like substance to form weapons and trap opponents.
* AdaptationalHeroism: The original Kevin was an AxCrazy EnfanteTerrible, whereas this one is mostly a bully and is capable of being reasoned with, even helping Ben and Gwen out on occasion. He still shows a willingness to kill Ben, but ''only'' Ben.
* AdaptationalIntelligence: The old Kevin was a good mechanic as a teenager; ''this'' Kevin, as an 11-year-old no less, is able to build a device similar to the Omnitrix following a dream he had.
* AdaptationalJerkass: But by the same token, the original Kevin's villainy resulted from a combination of [[FreudianExcuse being bullied and treated as a freak due to his powers]] and [[ThisIsYourBrainOnEvil a side effect of his powers making him psychotic when misused]]. This version of Kevin doesn't have any insanity-causing power, instead using his own Omnitrix, and he ''is'' himself a petty bully who takes pleasure in inflicting misery to others.
* AdaptationalSuperpowerChange: Instead of absorption powers, he wields a knock-off Omnitrix.
* AdaptationalWimp: [[DownplayedTrope A minor example]], he lacks his powers from the Classic Continuity, but unfortunately for Ben, [[GadgeteerGenius that doesn't mean he isn't a threat]].
* AntiVillain: He's not without his better qualities, and even at his worst one can certainly understand the pain that is motivating his actions.
* AscendedExtra: Somewhat {{Downplayed}}. While the Classic Kevin 11 was an important villain, he didn't necessarily appear too often, contrary to how some older fans might remember it. Even his final appearance was just a quick cameo in Ben's dream. In the reboot, however, he has now topped Vilgax as the most [[SpotlightStealingSquad frequently recurring antagonist]], making at least 32 episodic appearances and appearing in TheMovie. The higher-ups demanding 12 extra episodes featuring Kevin in Season 3 only further emphasize this trope. This oversaturation is somewhat fixed in Season 4, where several of his appearances are quick cameos and he generally doesn't have much substance to his appearances outside of the GrandFinale [[TheMovie movie]].
* ArchEnemy: He considers himself this to Ben.
* BerserkButton: Kevin gets ''very'' angry in "Introducing Kevin 11" when Ben points out that he, unlike Kevin, at least ''has'' people he can run to for help. His lack of friends or attentive family members clearly hurts him more than he lets on.
** In general, he hates being reminded he's alone. Say the wrong thing about his situation, he can go anywhere from defensive to outright attacking anyone who crosses his path. He also doesn't like being compared to Ben.
* BigBadEnsemble: With the Forever Knight in Season 3 after refusing [[WeCanRuleTogether his offer to join him]]. [[spoiler:At least until "Introducing Kevin 11", where he officially joins him due to [[GreenEyedMonster his jealousy towards Ben]].]]
* BodyHorror: In "Which Watch" Charmcaster uses a spell on his Antitrix, causing the device to use the DNA of all the 11 aliens on Kevin and mutating him in a grotesque amalgam of body parts, just like the Kevin from the original series.
* TheBully: He was Ben's worst bully at school, even worse than Cash and JT.
* CharacterDevelopment: In Season 4, while he's still TheRival to Ben, he's become a lot more mellowed out in his demeanor after [[spoiler:returning from being lost in the timestream for a long time]].
* CompositeCharacter: His appearance takes after Kevin from the original series and his role as Ben's Omnitrix-wielding rival takes after Albedo. He also is now in the role of Ben's old school bully previously filled by J.T. and Cash. The dynamic being developed between him and the Forever Knights also calls to mind Kevin and Servantis' dynamic from ''Omniverse''.
** WordOfGod is that his versions of Ben's aliens are this with other Omnitrix aliens from the classic continuity, though the exact hybrids are unknown.
* DemotedToDragon: Eventually joins the Forever Knight.
* DemotedToExtra: Kevin was so important to Season 3 that additional episodes were ordered for it under the mandate that he be included in them. In Season 4, he doesn't make nearly as much appearances, and a few that he does are just brief cameos. He does have a major role in TheMovie serving as the season's finale, though.
* EasilyForgiven: [[spoiler:Beyond their childish EvilerThanThou rivalry, Charmcaster works together fine with Kevin in "Roundabout", never bringing up that he was inadvertently the one who destroyed her spellbook in "Which Watch" or that he caused her defeat in "What Rhymes with Omnitrix?". Even him destroying her new power source just gets her comedically miffed rather than truly angry.]]
* EnemyMine: There are many instances of it in the extra ordered episodes of Season 3, and in "Roundabout: Part 2", [[spoiler:he ultimately teams up with Ben and Gwen against the Forever Knight when he realizes that their personal interests are incompatible and that the Forever Knight never truly believed that he was stronger than Ben. It also happens in Season 4, with Kevin more open to it at this point.]]
* EvilCounterpart: Once again is this to Ben, this time with his own Omnitrix.
* EvilerThanThou: He and Charmcaster seem to have a mild rivalry concerning this, with both insisting that they are the more capable villain.
* GeniusBruiser: Apparently, he is a skilled mechanic, seeing as he was able to create the Antitrix.
* GreenEyedMonster: "Introducing Kevin 11" reveals that part of his hate for Ben comes from the fact that Ben has a supporting family, unlike him.
* HeelFaceRevolvingDoor: Following the originally ordered episodes of Season 3 where he was part of a BigBadEnsemble, the extra ordered episodes of Season 3 revolve around Kevin's constantly flip-flopping morality as he begins falling between being an AntiHero and being an AntiVillain. By Season 4, though, he's more of a solid AntiHero who [[TheRival simply insists on not getting along with Ben and trying to beat him at everything, including heroism.]] [[spoiler: This status persists even in Ben 10,000's future, where his insistence on competing with Ben causes him to get permanently stuck in an alien form of his own making but he is still willing to join fights for the greater good.]]
* HeroicSacrifice: [[spoiler:Allows himself to get lost through time in order to defeat the Forever Knight and allow Ben and Gwen to return to the present in "Roundabout: Part 2".]]
* HybridMonster: WordOfGod is that all of Kevin's Antitrix aliens are mixes of two different species, presumably due to the Antitrix being a FlawedPrototype.
* {{Hypocrite}}: In "Which Watch", Kevin dismisses Charmcaster's petty grudge against Gwen as "stupid drama". All while continuing to take his own petty grudge against Ben completely seriously.
* ISurrenderSuckers: In "Buggy Out" he found himself being overwhelmed by Rath, so he pretended to surrender (as well as sweet-talking Ben), before sucker-punching him with Hot Shot's flame.
* {{Jerkass}}: He loves to make people miserable ForTheEvulz. As the show goes on, he swings between JerkWithAHeartOfGold and JerkWithAHeartOfJerk regularly.
* LackOfEmpathy: While not the sociopath that his Original Series counterpart was, this Kevin still suffers from this. The show's staff have said that this is the main thing setting Kevin apart from Ben: Ben will feel regret when he's messed up and apologize for it, whereas Kevin is largely incapable of doing the same.
* MistakenIdentity: Because of his watch, expect someone to mistake him for Ben or a relative of his. Taken up to eleven when he and Ben lose memories and swap phones, leading them to read each other's diaries and think they're each other.
* MythologyGag: At the end of "Which Watch", Ben says "Way to go, team!" to himself, Gwen and Kevin, who were a team in ''Alien Force'' and ''Ultimate Alien''. Cue Kevin angrily shoving Ben away, insisting they are ''not'' a team and that he'll be back to destroy him later. [[spoiler:Happens again in "Roundabout: Part 2", where despite working with them and making a HeroicSacrifice for them, he insists that he is still their enemy and will ultimately be the one to destroy them.]]
* NoGoodDeedGoesUnpunished: In TheMovie, he comes the closest to a full-on HeelFaceTurn as he has ever had. As a result, he gets put through the wringer over and over again, and having his fears of inadequacy especially when compared to Ben reinforced stronger than ever before.
* NominalHero: Many times in the additional episodes ordered for Season 3, he ends up playing the hero either against his will or because he has a selfish objective to be gained in doing so.
* TheOnlyOneAllowedToDefeatYou: He's furious when Charmcaster controls him to try to kill Ben in "Which Watch", because if it's under her control then it doesn't really count as ''him'' getting to do it. [[spoiler:He also protests her trying to kill Gwen in "Roundabout" by saying that if anyone gets to kill her, it'll be him, although in this is just a cover for his PrecociousCrush on her.]]
* ParentalNeglect: He is the victim of this, as shown in "You Remind Me of Someone".
* PetTheDog: He helps Ben and Gwen in "Franken-Fight", even parting ways with them on peaceful terms for once.
** He also ends up working together with Ben in "Four by Four", even [[TakingTheBullet taking a laser tag bullet for him]], although he insists it was for just his own benefit.
** At the end of "Introducing Kevin 11", he helps Ben save innocent people from a collapsing building since he doesn't want people not involved in he and Ben's feud to get hurt (hence why he knocks the building onto Ben once the people are safe).
* PrecociousCrush: As shown in "Franken-Fight", he has a one-sided crush on Gwen. As we see later on, [[SheIsNotMyGirlfriend he vehemently denies it]] in front of either of the Tennyson cousins.
* RedemptionEqualsDeath: [[spoiler:Well, in this case it equals getting lost in a time portal, and he stubbornly insists it isn't a redemption. And he was right, as he finds his way back to the present in Season 4 and goes right back to causing trouble, albeit with less intense of an attitude as he had before.]]
* RedemptionRejection: Like in the original show, he does this frequently, as his stubborn pride and hatred of Ben is just too strong. [[spoiler:He even makes a HeroicSacrifice while still insisting he's "the baddest around".]]
* RememberTheNewGuy: He is introduced as someone Ben knows from school, but neither Gwen nor the audience are familiar with.
* TheRival: To Ben. He is even described as such in official material.
* RunningGag: Some season 3 episodes has some of the villains describe him as "emo Ben" due to having a watch with aliens like Ben but being overall DarkerAndEdgier, much to Kevin's chagrin.
* ShoutOut: Now that he has been fleshed out more as a rival to Ben rather than a legitimate villain, the dynamic between the two is quite reminiscent of Bugs Bunny and Daffy Duck.
* SheIsNotMyGirlfriend: If anyone dares to suggest that he has a crush on Gwen, which he does, he will swear up and down that he doesn't.
* SourOutsideSadInside: He may be a {{Jerkass}} bully, but deep down he's also a lonely kid.
* TroublingUnchildlikeBehavior: While not AxCrazy in general like in the original show, this version of Kevin has still made it clear that he'd have no qualms killing his rival Ben. He also claims he'd be fine killing Gwen, but in that case [[SheIsNotMyGirlfriend he's obviously in denial]].
* {{Unishment}}: [[spoiler: In ''Ben 10,010'', continuing to tamper with alien DNA in order to one-up Ben caused him to become trapped in the form of Humangoraptor, his answer to Ben's Humungosaur form, for several years, with no clear endpoint in sight. But given that this mean's he's now a giant, super-strong humanoid dinosaur, Kevin isn't exactly bothered by his condition.]]
* UngratefulBastard: A recurring trend with him is that any time Ben helps him or saves his life, it only makes him hate Ben ''more'' because he can't stand seeming weaker than him. The most blatant example is in "Buggy Out", where Ben saves Kevin from the angry Forever Knight, only for Kevin to willingly go back to the Knight at the end of the episode and offer up a way to use Ben's beloved family members against him.
* UnManlySecret: "Xingo-Nation" reveals that he's a fan of [[ShowWithinAShow Lucky Girl]], though he doesn't like people to know that.
* UnskilledButStrong: His modifications to his alien forms makes them more powerful, but Kevin still needs more practice. Likewise with his aliens; they do have additional features and strengths the originals don't but they also come with a drawback of not being that alien. Dark Matter for instance is much stronger than Grey Matter, but it's not quite as smart, and its larger size makes it easier to hit compared to Grey Matter.
* UnwittingPawn: [[spoiler: To Vilgax. The dream showing him how to build the Antitrix was sent to him by Vilgax, and Vilgax always intended to take it from him once he escaped the Null Void.]]
* VillainsOutShopping: In "Four By Four" he simply wants to enjoy a good game of Lazer Tag. It takes him a while to convince Ben he is not stalking and planning to attack him for once. This kind of incident happens more often with him in the additionally ordered episodes of Season 3, and a few in Season 4.
* WildCard: He can cause trouble, help to fix trouble, or both in any given order. Ben even lampshades in "Bottomless Ben" it by saying he will never be able to understand Kevin given how much his behavior keeps changing.
* WouldHitAGirl: As we see with his fight with Gwen in "Roundabout", he doesn't discriminate by gender when it comes to how ruthless he can be in dealing with his opponents. He also attempts to fight Charmcaster alongside Ben in "What Rhymes with Omnitrix?", but it [[CurbStompBattle doesn't go well for them]].
* YouAreBetterThanYouThinkYouAre: Gwen and Grandpa Max tell him this in TheMovie to convince him to help them.

!!Bashmouth
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/bashmouth_pose.png]]
[[caption-width-right:350:''"This big guy? I think I'll call him... Bashmouth!"'']]
->'''Voiced by:''' Creator/GregCipes

The only alien in the Antitrix that isn't an EvilTwin of one of Ben's aliens, Bashmouth is a werewolf-like creature from an unknown species.

* BigEater[=/=]TheSnackIsMoreInteresting: He loves to eat meat: at one point he doesn't finish off a defenseless Ben (his Omnitrix just timed out) because he sees some sausage and runs over to them.
* EvilCounterpart: To Rath. They are both aggressive aliens based on an Earth animal who have trouble controlling their instincts. There's also some AnimalJingoism involved, as one of them is canine and the other is feline. Ben even [[LampshadeHanging comments on it]].
* FangsAreEvil: He has really pointy teeth, and can (at least when they are covered by metal) take a bite out of a concrete pillar as if it was a cookie.
* InstantArmor: He can cover his fur and teeth at will with metal that seems to come out from nowhere.
%%* MightyRoar: His roar is powerful enough to crack concrete.
* MythologyGag: His body resembles that of Blitzwolfer from the classic continuity. However, he is not a Loboan like Blitzwolfer.
* OurWerewolvesAreDifferent: He is an alien, but looks like a very beefy werewolf.
* ShoutOut: His name is a tribute to the band ''Music/SmashMouth''. The show turns this up [[{{Pun}} to eleven]] by having Bashmouth's debut episode full of lines from the song [[MemeticMutation "All Star"]].
* SuperStrength: Easily as strong as Four Arms, and can crush concrete pillars with little effort.
* SuperToughness: With his InstantArmor on: to clarify, ''Four Arms'' hurt himself by punching it.

[[folder:The Xerge]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/xerge.png]]

A HiveMind invading Earth in the "Ben 10,010" special.

* ArcVillain: Of "Ben 10,010".
* {{Expy}}: Their status as a HiveMind whose species becomes one of Ben's aliens make them seem to be an adaptation of the Hive from the original continuity.
* HiveMind: The species are a collection of tiny nanomachines that combine together.
* StarterVillain: The main antagonists for the first of the Season 5 specials.

[[folder:Alien X]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/tinction_115.png]]
[[caption-width-right:350:"I leave you with your life. Consider it a gift."]]
[[caption-width-right:150:[[labelnote:Click here to see his true identity]]https://static.tvtropes.org/pmwiki/pub/images/ben_10000.png[[/labelnote]]]]
->'''Voiced by:''' Creator/FredTatasciore

A mysterious Celestialsapien traveling the multiverse, stealing the Omnitrixes from each one.

* AdaptationalVillainy: [[spoiler:This alien form is used by an evil Ben Tennyson, rather than the current version.]]
* AdaptationalWimp: [[spoiler:The original Alien X was able to survive the destruction of the universe, making him NighInvulnerable to almost everything (save for maybe a Chronosapien Time Bomb). This Alien X is defeated by Ben's normal aliens, albeit, from a coordinated effort of several Bens from across the multiverse and loses out in a fistfight to Four Arms. In addition, his reality-warping powers are much more limited than the nigh-omnipotence that the original Alien X had. This [[AmbiguousSituation might]] be justified given that Ben gained Alien X by accident upon destroying the Omnitrix symbol in his backstory.]]
* AdaptedOut: [[spoiler:There is no mention of Serena and Bellicus, with Ben having full control over Alien X. Though, whether they exist or not remains unclear as seen in AmbiguousSitation below.]]
* AlternateSelf: [[spoiler:He is another Ben Tennyson. Technically, he is an alternate Ben 10,000 as he is much older than the 10- and 16-year-old Bens he fought, though the diverging point seemed to happen when he was 10. This Ben is an arrogant, selfish {{Jerkass}} who went on his path of villainy after losing his Gwen and Max to Vilgax and acquiring his Alien X form not soon after.]]
* AmbiguousSituation:
** [[spoiler:Alien X would sometimes refer to himself in first person plural using phrases like "'''we''' are infinite" and "now it is '''our''' turn", indicating that Serena and Bellicus might exist and is in full agreement with Ben. However, given this version of Ben having obvious mental and emotional instability, it could be a case of him using the RoyalWe to sound more intimidating at times. Furthermore, this Ben gained the Alien X transformation by accident upon destroying the Omnitrix symbol as Four Arms in a possible murder-suicide with Vilgax, and as a result, Alien X lacks the SplitPersonality handicap like its usual brethren.]]
** [[spoiler:Unlike the classic continuity, this Alien-X lacks most of the omnipotence to its power as a RealityWarper. But whether it's due to AdaptationalWimp or the nature of how Ben got this alien transformation is not clear.]]
* AntagonistTitle: The titular antagonist of '''Alien X'''-Tinction.
* BlamingTheVictim: [[spoiler:As he reminisces about the loss of his Gwen and Grandpa Max, he claims that their deaths were ''their own fault'' for getting in his way of defeating Vilgax, [[SelfServingMemory even though that's not it happened]]. While it ''would'' be understandable if he's only saying this out of grief and possible guilt, it's been so long since their deaths that it doesn't faze him anymore.]]
* BigBad: Of ''Alien X-Tinction''.
* CameBackWrong: [[spoiler:It's heavily implied that Ben, in his grief, tried to commit murder-suicide with Vilgax by destroying the Omnitrix symbol and causing a devastating explosion. Only to be resurrected as part of the Omnitrix's defense systems by changing into Alien X, and afterward, he wreaks havoc in the Omniverse by stealing the Omnitrixs of alternative Bens and spreading misery upon them.]]
* CharacterExaggeration: PlayedForDrama. From his arrogance, and selfishness to his belief that he's invincible, he's what would happen if [[spoiler:Pre-CharacterDevelopment Ben ''never'' got better. The result is a dimension-hopping, power-mad terror with all the power in the world but none of the maturity of a Ben who grew up to temper it]].
* {{Expy}}: He fills a similar role to Eon in the Classic Continuity, [[spoiler:being an evil version of Ben from an alternate timeline, who hunts the various versions of himself throughout the Multiverse.]]
* FallenHero: [[spoiler:This was once Ben Tennyson before losing those closest to him.]]
* FinalBoss: Of the 2016 series original run.
* FreudianExcuse: [[spoiler:He lost his Gwen and Max to Vilgax, and went on a conquest across the multiverse to give the same grief and pain to his other counterparts.]]
* HeroKiller: He has defeated and killed many different Bens and Omnitrix users.
* KnightOfCerebus: One of the few villains of the reboot who isn't treated comically.
* LackOfEmpathy: [[spoiler:Though he was devastated when he lost his family, by the present day, he only speaks of them dismissively, and has no problem killing his alternate selves or their families if it would cause them grief. He is unrepentant for his actions and is annoyed at Maximillian's efforts to habilitate him.]]
* MultiversalConqueror: He's traveled to at least a dozen universes, the Omnitrixes on his body as proof.
* NeverMyFault: [[spoiler:As shown in the flashback, Gwen and Max lost their lives in trying to save him from Vilgax, yet in his own words they got in the way of a fight he claims he was winning.]]
* PsychopathicManchild: [[spoiler:As revealed near the end, he's an alternate Ben 10,000. But unlike the other adult Ben's, this one ''never'' outgrew his childish arrogance and ended up gaining an alien form that held too much power for his level of maturity at the time. Furthermore, his stint as a MultiversalConqueror is nothing more than an emotionally unstable kid stuck in his grief and trying to resolve it by throwing a massive temper tantrum and forcing ''every'' omniversal counterpart of himself to go through the same misery as he did.]]
* SelfServingMemory: [[spoiler:He claims that his Gwen and Max died because they got in his way in a fight against Vilgax that he was winning, though in the flashback it shows that he was getting his butt handed to him and would have lost his Omnitrix if it wasn't for them.]]
* ShapeshifterModeLock: [[spoiler:It's heavily implied that he stays in his Alien X form for ''years'' after the loss of his Gwen and Grandpa Max, and it's only till his defeat that he reverts back to his original human form.]]
* StoryBreakerPower: [[WordOfGod Duncan Rouleau]] states that Alien X would appear in the reboot, but sparingly as he's too powerful for the series to use as a character.
* WalkingSpoiler: It's hard to talk about his true identity as an [[spoiler:alternate Ben 10,000]] without spoiling the entire movie.
* WouldHurtAChild: Given that some of the Bens featured on the alternate Max's computers are still 10, his statement that the current one at least survived means he has no trouble with the age of his victims.

!!Independent Villains
[[folder:Maurice and Sydney]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/bugs_5.jpg]]
->'''Voiced by:''' Creator/JohnDiMaggio

A scientist who got his head swapped with a flea and vice versa. They generally focus on trying to rob people through science.

* BrainsAndBrawn: Their dynamic with Maurice being the brains and Sydney acting as the brawn.
* CreepyCockroach: A variant and twofold, Maurice has the body of a flea while Sydney's, a flea, head is stuck on Maurice's body.
* DumbMuscle: Sydney on occasion.
* GeniusBruiser: Considering that it is Maurice's body Sydney is using to be the muscle, it's safe to say Maurice was this before the head swap.
* GoldfishPoopGang: Their schemes are never very threatening, and they're constantly making extreme blunders.
* HiddenDepths: "Half-sies" reveals that Sydney writes romance novels and hopes to get them published.
* MadScientist: Well considering he got his head switched with a flea. Yeah it's safe to say Maurice is one.
* TheUnintelligible: Sydney, being a flea, can only communicate in growls and clicks, through oddly Maurice can understand him.

[[folder:Zombozo]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/zombozo_re.png]]
->'''Voiced by:''' Creator/JohnDiMaggio

* {{Acrofatic}}: He is clearly overweight, yet he can run and do flips and cartwheels like is nobody's business. He even fought several of Ben's aliens with his acrobatics.
* AdaptationPersonalityChange: He's much more "clown-like" here, reminiscent of ComicBook/TheJoker from [[UsefulNotes/TheSilverAgeOfComicBooks the Silver Age]].
* AdaptationalBadass: He's a more skilled fighter here than in any other version.
* AdaptationalWimp: He isn't remotely supernatural in this show, with his gimmick being hypnotic mind-control technology instead.
* AscendedExtra: The original continuity's Zombozo only ever had five appearances (one in the original show, one in ''Ultimate Alien'', and three in ''Omniverse'' - with two of those being little more than cameos). This version, by contrast, appears much more regularly.
* BadBoss: He is ever. Not only he is not paying a dime the Circus Freak trio [[spoiler:causing them to leave him in]] "Vote Zombozo", but the same episode also reveals that Acid Breath (a 16 years old in this version) has been reduced to his current look by a disease that Zombozo never bothered to have a doctor check or treat, despite the teen begging him to.
* CompositeCharacter: Rather than circus related paranormality, here his main gimmick is hypnotic mind control, much like Sublimino in the first series.
* HeelFaceDoorSlam: He actually tries to go straight in "Party Poopers", but Frightwig is having none of it.
* IneffectualSympatheticVillain: Zombozo isn't very lucky - not only does he always fail, but [[spoiler:eventually even his hired hands, the Circus Freak trio, temporarily abandon him, and by "Supervillain Team-Up" he's living as a hobo. It gets so bad that he even tries to go straight as a party clown in "Party Poopers".]]
* LargeHam: He has a very theatrical voice, courtesy of John [=DiMaggio=].
* LazyBum: In "Welcome to Zombozo-Zone" he hypnotized everybody in a medieval-style fair (including the Tennysons) in believing he was the king. He then proceeds to do basically nothing except stuff his face and take servants, leaving Ben to do all the work with his aliens. He even admitted to Gwen he only wants to be king to "eat, relax and dress fancy".
* MonsterClown: Although much less monstrous than in the earlier shows. He fits the bill a little more in "Dreamtime", where he traps the Tennysons in a nightmare they can't escape from where he rules with some RealityWarper powers thanks to a machine he built.
* NotSoHarmlessVillain: While he is less dangerous than his OS counterpart, "Dream Time" and "Funhouse" show that he can be an effective threat when he wants to be.
* UnwittingPawn: Frightwig and the othercircus freaks are just using him as a distraction and he has no idea.
* VillainTeamUp: Vilgax kidnapped him in "Super Villain Team-Up" to use his hypnotic powers to mind control the army of aliens he wanted to create with Ben's Omnitrix.
* WeaksauceWeakness: Not him, but his hypnosis: if a victim sees their own reflection, they immediately break free.

[[folder:Queen Bee]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/queen_bee_3.png]]
->'''Voiced by:''' Creator/VanessaMarshall

An anthropomorphic bee.

* AnimalTalk: A weird variation. She speaks human but can perfectly understand another bee's buzzing. [[note]] Bees normally communicate through body movements rather their buzzing, but cartoon logic is in action.[[/note]]
* BadBoss: Abandoned her henchman when about to get caught.
* BeePeople
* DramaQueen / ItsAllAboutMe: She's vain and self-absorbed, and never misses an occasion to put the spotlight onto herself. Her debut even has her mention she used to take part in a local community theater before turning to a life of crime.
* FatBitch: Not a nice person, and quite rotund.
* KingMook: Is just a regular bee, but bigger.

[[folder:Hex]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/hex_reboot.png]]
->'''Voiced by:''' Creator/RobinAtkinDownes

* AdaptationalDumbass: He's still as powerful as ever, but now easily duped and frightened.
* AdaptationPersonalityChange: From a ruthless and frightening sorcerer to a hammier, occasionally bumbling wizard.
* ArcVillain: Of "Ben Gen 10".
* AscendedExtra: All things considered, Hex was one of the lesser foes in the original continuity, whereas he is one of the most frequently recurring in this continuity. Makes sense considering he is largely separated from his [[SpotlightStealingSquad more popular niece]], Charmcaster.
* BeliefMakesYouStupid: His justified belief in magic makes him believe ''anything'', even that sleight of hand magic tricks are real magic or that zombie cosplayers are actual zombies.
* TheComicallySerious: He isn't ''trying'' to be funny, but he often can be all the same.
* EvilBrit: He has a British accent in this version.
* EvilSorcerer: Like he was in the original series.
* {{Expy}}: He resembles [[WesternAnimation/{{Aladdin}} Jafar]] in his demeanor and voice more than he does the original Hex.
* LargeHam: Despite being equivalent to the original show's Hex, this version is more like ''Omniverse'' in his theatrical demeanor.
* Really700YearsOld: "Creature Feature" reveals he has been around for centuries at the very least, and [[WordOfGod according to Kelly Turnbull]], [[TimeAbyss he's over 10,000 years old]]. He must bathe himself in a special pool of magic light every hundred years in order to survive.
* RedAndBlackAndEvilAllOver: This is his color scheme once again.
* ScaledUp: He turns into a giant snake in "Story, Board".
* UngratefulBastard: Played with in "Creature Feature" with Hex. Ben saves his life, and he stands down from turning on Ben as a result. But according to him, this is ''not'' out of gratitude - one of the laws of his magic is that he must obey [[IOweYouMyLife a life debt]]. He insists that next time they meet, the debt will have been paid and he won't hold back.
* UnrelatedInTheAdaptation: Subverted, he didn't appear to be Charmcaster's uncle in this version at first, but "What Rhymes with Omnitrix?" confirms that he is.
** In a less literal sense, he also has little to no connection to Gwen this time around either, being strictly one of Ben's enemies rather than Gwen's initial ArchEnemy.
[[/folder]]

[[folder:Billy Billions]]
[[quoteright:300:https://static.tvtropes.org/pmwiki/pub/images/billy_billions_2016.png]]
->'''Voiced by:''' Gunnar Sizemore

* AdaptationalAttractiveness: Maybe only because of the art style, but ''Omniverse'' Billy had an uglier, more crooked face, with a more pronounced horned hairstyle, and a significantly snider face. This one has smoother features and doesn't look any uglier than Ben or Gwen.
* AdaptationalNameChange: In the Classic Series, his full name is Billiam Billions, while in the Reboot, it's William Theodore Billions.
* AdaptationalNiceGuy: Make no mistake, he's ''still'' a brat, but ''Omniverse'' Billy had no redeeming quality whatsoever and was driven primarily by envy toward Ben. This one [[spoiler:at least has HiddenDepths and a more sympathetic side]].
* AgeLift: He actually ''is'' a little kid in this show, rather than a teenager trapped in a kid's body like in the original franchise.
* AntiVillain: [[spoiler:Of TheWoobie variety, as deep down he's lonely and [[IJustWantToHaveFriends just wants real friends]] that don't just like him for his money.]]
* AscendedExtra: A minor villain in ''Omniverse'', he becomes part of the RoguesGallery in the reboot.
* EnemyMine: He's forced to work together with Ben and Gwen in "Don't Laze Me, Bro" when his robots go rogue.
* EvilCounterpart: He is more of one to Ben in this version due to them both being the same age and indulging in bratty, selfish or competitive behavior with each other often. Also, his first name starts with a "B" and his last name is numerical. This is especially pronounced in "Ben Again and Again".
* HiddenDepths: [[spoiler:He acts the way he does because he is convinced nobody would be interested in him if it wasn't for his obscene amount of wealth, and has no idea on how to make friends.]]
* IJustWantToHaveFriends: [[spoiler:He confesses that he flaunts his money as a way to compensate for his lack of real friends, since he fears nobody would ever be friends with him unless it was to mooch off of his wealth.]]
* SourOutsideSadInside: [[spoiler:"Billy Bajillions" explains that his brash personality comes from the fear that nobody would want to be his friend if he wasn't stinking rich]].
* SpoiledBrat: His entitled, bratty attitude is his defining characteristic.
* TroublingUnchildlikeBehavior: He will occasionally do things that could possibly kill people. [[spoiler:In "Roundabout", he actively tries to murder Phil in order to gain more favor with the Forever Knight.]]
* YankTheDogsChain: [[spoiler:After he admitted his obnoxious persona is just a mask, Ben and Gwen actually decided to give him a chance to become friends... and then [[NiceJobBreakingItHero the Forgeti made everybody forget what happened that day]].]]

[[folder:Steam Smythe]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/steam_7.PNG]]
[[caption-width-right:350:"Steam Smythe at your service."]]
->'''Voiced by:''' Creator/RogerCraigSmith

An old fashioned villain who focused on steampunk.

* AlliterativeName: His machines run on steam, and his name is STEAM Smythe.
* BornInTheWrongCentury: Guy would be at home in the 19th-Century but lives in the modern era. As such, he utterly hates modern technology.
* DoubleStandard: He HATES modern technology, but seeks out the weapons of deceased inventors.
* EvenEvilHasStandards: He adheres to the principles of chivalry, which means never striking a lady.
* EvilBrit: Speaks with a British accent.
* FatalFlaw: His obsession with war machines and the past in general renders him blind to the flaws of his pursuits. His Clocktopus kept having its levers jam and the artifacts he searched for are harmless and useless for combat.
* NostalgiaFilter: Stubbornly flaunts the "superiority" of the past over the modern age. He overlooks the fact that all of the famous historical figures whose artifacts he seeks were people considered [[{{Irony}} ahead of their time]] and responsible for pushing their present into the future and thus would never share his sentiments.
* OlderThanTheyLook: In "Bon Voyage" a picture from Grandpa Max's childhood shows someone that looks the same as Steam Smythe does now.
* SteamPunk: Pretty much all his weapons and gadgets run on steam.

[[folder:Nanny Nightmare]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/nanny_nightmare.png]]
->'''Voiced by:''' Creator/AnnaVocino

A former bio-chemist obsessed with teaching children proper manners by any means necessary.

* BabysitterFromHell: Essentially how she presents herself.
* FatBitch: Is rather chubby looking.
* FountainOfYouth: In her debut, she managed to turn Ben and Gwen into younger versions of themselves via a baby powder.
* HoistByHisOwnPetard: Hit by her same baby powder which causes her to accelerate in age, turning her elderly. Though she's back to her normal self in her second appearance.
* WellIntentionedExtremist: Wants to teach children good manners, but is utterly aggressive about it that would be no way considered moral.

[[folder:Tim Buktu]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/villaintime13.png]]
[[caption-width-right:350: "It's villain time!"]]
->'''Voiced by:''' Creator/TravisWillingham

A celebrity hero who was actually setting up the danger he rescued people from, and wants revenge on Ben for exposing this.

* BasementDweller: Implied in "Savana Sa'bad" where he complains his mother changed the locks, presumably after kicking him out.
* BorrowedCatchPhrase: "Borrows" Ben's "It's hero time!" in his debut episode. By the end of the episode, he changes it to "It's villain time!" to mark his change to being a villain.
* CrazyPrepared: To his credit, he is smart enough to carry the cures for his poisons on him in case they are used on him.
* DirtyCoward: He likes to act tough, but shows his true cowardly colors when he's put in danger.
* {{Expy}}: Of Captain Nemesis from the classic continuity. Like Nemesis he's a FakeUltimateHero who makes use of EngineeredHeroics to endanger lives, but gets exposed by Ben.
* FakeUltimateHero: He saves people from disasters that he engineers, all for fame and glory.
* LanternJawOfJustice: Subverted. Subverted. While he likes to cut heroic poses, and he has a very impressive jawline, he's actually a DirtyCoward who manufactures the disasters he rescues people from.
* LargeHam: As is expected of someone voiced by Travis Willingham.
* MindControl: Using a voodoo doll he forced Ben to do his bidding in "Savana Sa'bad", in order to set him up and destroy his reputation as a hero.
* {{Narcissist}}: He lives by ItsAllAboutMe.
* SmallNameBigEgo: He sees himself as Ben's ArchEnemy. Ben doesn't even put him in the top ten.
* UngratefulBastard: Ben [[SaveTheVillain saves his life]] in his debut episode. Tim still vows revenge on Ben for exposing him as a fraud.
* WouldHurtAChild: Apart from his hate of Ben, he tried to drown a boat full of children in "Savana Sa'bad" and give Ben the blame.

[[folder:Dr. Animo]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/rebootanimo.png]]
->'''Voiced by:''' Creator/DwightSchultz

* BodyHorror: After he injects himself with the alien DNA from the Omnitrix, the various parts of his body starts fluctuating between all Ben's aliens, giving him briefly a look not so different from the original Kevin.
* FreudianExcuse: He loved his brilliant veterinarian father and wanted to live up to his legacy.
* FriendlyEnemy: Surprisingly can be this from time to time - despite his hatred for Ben, he works together with him very well in "Animorphisis", and actually allows Gwen to give him some psychiatric help in "Chicken Nuggets of Wisdom" and even thanks her for it as he's being escorted to prison.
* HisOwnWorstEnemy: During his therapy session with Gwen in "Chicken Nuggets of Wisdom" [[DiscussedTrope he considers]] if the reason [[EvilGloating he is always explaining his plans out loud]] is because he deep down wants to be stopped.
* JumpingOffTheSlipperySlope: His obsessive desire to live up to his father's work caused him to become more amoral and unhinged.
* PantheraAwesome: After the BodyHorror phase, he transforms into one of Ben's aliens... [[spoiler:Rath]].
* ParentalNeglect: He dearly loved his father, but he feels his parents were never proud of him.
* {{Revenge}}: He hates Ben for destroying his finest creation and swears undying vengeance upon him as a result.
* TookALevelInBadass: After transforming into [[spoiler:Rath]] by injecting himself with the stolen alien DNA, he is able to land some blows to Vilgax, and almost kills Ben. [[spoiler:Since the effects were similar to Ben changing with the Omnitrix, [[AwesomessIsVolatile it only works for a few minutes]]]].
* UsedToBeASweetKid: He's shown in a photo as a humble science student alongside his father.
* VillainTeamUp: With Vigax in "Animorphosis". [[spoiler:After getting what he wanted, the alien betrayed him, leading to Animo to ally himself with Ben.]]
[[/folder]]

[[folder:Lord Decibel]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/lord_decibel.png]]
->'''Voiced by:''' Creator/DavidKaye

A mysterious man wearing a high tech helmet and uses high-frequency music to put people in danger to obtain ransoms.

* BadassNormal: Sonic tech aside, he's still a normal human able to tangle with super-powered aliens.
* EvilSoundsDeep: Courtesy of Creator/DavidKaye who gives him a deep synthetic voice.
* ExpressiveMask: Not quite, but his dome can display whatever he wants with neon lights, and that sometimes includes the emotion he is clearly feeling.
* TheFaceless: In all his appearances, his face was constantly covered by his dome.
* {{Greed}}: The primary motivation for his crimes is money.
* HoistByHisOwnPetard: He was the only one to be buried by the avalanche he created.
* MakeSomeNoise: His entire gimmick. Lord Decibel can amplify sound to harmful levels, capable of causing fissures, avalanches, and tsunamis. He is also capable of creating sound constructs, or just blasting sound shockwaves as attacks.
* MalevolentMaskedMan: Wears one with LED lights that express his emotions.
* MeleeATrois: "Digital Quality" has him, Ben, and Kevin fighting a three-way battle for a CD. Eventually Ben and Kevin join forces against Lord Decibel.
* TheMusicMeister: When his powers are combined with the high quality music of [=CDs=], he can make people involuntarily dance.
* MusicalAssassin: He hasn't kill anybody yet, but hundreds of people have been threatened by him.
* NotQuiteFlight: Can use the sonic waves of his instrument to hover.
* OnlyInItForTheMoney: Pretty much all of his crimes involve threatening the lives of large masses and demanding ransoms.
* ThePowerOfRock: A villainous example: he uses it to take people hostage and demands payments.
* StupidCrooks: Not in the traditional sense (he hasn't been shown to be dumb or ignorant), but he seriously expected people would be able to gather a billion dollars of ransom ''in ten minutes'''.

[[folder:The Weatherheads]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/roboys.PNG]]
->'''Voiced by:''' Creator/DavidKaye (Shock-O), Creator/JeffBennett (Hail-O) and Creator/EricBauza (Gust-O)

The Weatherheads are three robotic businessmen who want to cause chaos with their weather machines.

* AbortedArc: It's been hinted at several times that they are ordered around by a mysterious council of sorts, and even have a superior named Sunny who appeared in Season 4. However, the arc behind their exact origins is not explored further.
* BlatantLies: In "The 11th Alien": they totally aren't working with Vilgax; it's just a coincidence they are in the same area together: they are on vacation.
* TheEmpath: Ironically in ''"The Feels"'' it is revealed they charge their batteries from negative emotions. They plot to disrupt the weather everyone is enjoying to do this. When their thwarted actions inadvertently spark positive feelings instead, they also act positively before shutting down.
* FusionDance: Can combine their bodies to combine their powers.
* GenreBlind: They actually expected ''[[ChronicBackstabbingDisorder Vilgax]]'' to give them Earth for their service. [[IdiotHero Ben]] had to explain to them how dumb it is. [[spoiler:As a result, they attack both Ben and Vilgax.]]
* HiddenAgendaVillain: They are introduced while attempting to start a storm large enough to reach into space. Why isn't elaborated on, only that they have a superior named Sunny, who was only introduced in a later episode.
* TinMan: They have a tendency to remark that they have no emotions, yet it is clear that they are programmed to have them. This can be exploited, as they were tricked by Ben into fighting each other.
* IWouldSayIfICouldSay: In the same breath they express what emotion they are feeling, by denying that they are capable of feeling it.
** This is {{Lampshaded}} and subverted in The 11th Alien. Where they start out saying that they would be angry if they had emotions. They stop halfway through and straight up declare that they ARE angry.
* NiceJobFixingItVillain: By attacking [[EnergyAbsorption Shock Rock]] with their lighting bolts they charged Ben with enough energy to defeat Vilgax (bonus points because the conqueror warned them to not do it).
* PersonalityChip: ''"Heat of the Moment"'' shows that they have their emotions connected to a switch hidden under their chest plate. When switched on Gust-O becomes a cap-wearing hothead, Shock-O a campy sweater over the shoulders snarker and Hail-O inconsolably depressed.
* WeatherManipulation: They can create storms, lightning, tornadoes and other weather changes over relatively large areas.

[[folder:LaGrange]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/frenchie_4.png]]
[[caption-width-right:350:"It's LAGRANGE!"]]
->'''Voiced by:''' Creator/DavidKaye

A racing-themed villain obsessed with being the fastest.

* CheatersNeverProsper: He never won a race on-screen. He was the holder of the record for fastest land vehicle, however.
* CoolCar: Drives one that's tricked out with gadgets.
* DrivesLikeCrazy: Drives with no regard for property or safety.
* {{Expy}}: Of Racer X from ''Anime/SpeedRacer''.
* FrenchJerk: Speaks in a very heavy French accent.
* KickTheDog[=/=]UngratefulBastard: In "[=LaGrange=] Murraille" he is attacked by Ben during a race against Vin Ethanol, and begs the other racer to help him, reminding Vin how at one point they considered each other family. After Vin helps him, he uses the other racer as a ram against Ben and goes on to win the race.
* OnlyFriend: During "Mock 10", [=LaGrange=] admits that, deep down, he considers Vin the only person who, gets him.
* TheUnpronouncable: No one can pronounce his name correctly, which makes him angry.

[[folder:Xingo]]
[[quoteright:337:https://static.tvtropes.org/pmwiki/pub/images/xingo.png]]
->'''Voiced by:''' Creator/TomKenny

Ben's favorite cartoon character, this fox-like creature was brought to the "real" world by a combination of Upgrade fixing the Rust Bucket television and, of course, [[LightningCanDoAnything lightning]]. Ben was excited, of course... until he realized Xingo's idea of fun doesn't work well outside his world.

* AesopAmnesia: In his third appearance, it seems Xingo finally understood that the only place for him is his cartoon world, and he will never change the grimy real world to fit his nonsensical taste. Come his fourth appearance, he is now back to be being bratty and psychotic, somehow forgetting his realization, and desires to wreak havoc on humanity once more. To make matters worse, he's still clearly the same Xingo, as he remembers Ben and Gwen.
* AffablyEvil: When he isn't up to causing havoc, Xingo can be surprisingly sweet. In "And Xingo Was His Name-O", he actually makes a breakfast feast for Gwen and Max.
* BlueAndOrangeMorality: It is implied he doesn't quite ''get'' all the differences between his world and the real one, mostly how real people don't get AmusingInjuries by being crushed to death.
* {{Expy}}: He's basically Daffy Duck with a dash of The Mask and Mr. Mxyzptlk.
* FinalBoss: He is the protagonist of his video game, but when Ben is trapped in it, he became the last enemy.
* FriendlyEnemy: He seems to consider his fights with Ben little more than comical skirmishes, [[spoiler: at least in his first appearance.]]For his part, Ben, while he doesn't appreciate Xingo' s attacks on him and his family, still likes his cartoon.
* HalfDressedCartoonAnimal: He wears a sweater, but no pants.
* {{Hammerspace}}: With him being such a Looney Tunes-inspired character, it's no surprise.
* HealingFactor: Neither is this.
* {{Keet}}: He's bright, colorful, loud and extremely hyperactive.
* LaughablyEvil: Even though he's an antagonist, he really comes off as more quirky, cute and wild than downright evil. The fact that he's a big-eared fluffy fox in a sweater helps amplify his cuteness.
* TheOmnipotent: In Ben's world, his ToonPhysics grants him a level 2 of this.
* PungeonMaster: We would be here all day if we listed all the examples.
* RealityIsOutToLunch: With his powers, he surely gives this impression. According to Ben, his whole video game is based on this premise.
* RealityWarper: He can create whatever he wants out of thin air and twist and transform his body as he wishes.
* TakesOneToKillOne: In his first episode Ben was able to defeat him only because he absorbed part of his ToonPhysics when Xingo escaped from Tv.
* ToonPhysics: He still has them outside his world, making him virtually unstoppable in Ben's. [[spoiler:Unless somebody else uses them against him.]]
* WinToExit: How Ben got free from his video game.

[[folder:Frightwig]]
[[quoteright:255:https://static.tvtropes.org/pmwiki/pub/images/screenshot_2018_09_19_215357.png]]
->'''Voiced by:''' Creator/JessicaDiCicco

In the reboot, Frightwig is introduced as a 10-year old girl who is her own standalone villain, not yet a part of the Circus Freaks ([[spoiler:and when she does join up with them, the group itself doesn't last long, at least under Zombozo]]). Her hair is now a device attached to her head, complete with its own A.I. voice that can talk to her.

* AdaptationPersonalityChange: Frightwig is now a mischievous 10-year-old, much like Ben, except her mischief is criminal, even potentially homicidal. She also has [[MadScientist a penchant for science]] that was not present before.
* AgeLift: She was a fully grown adult in the original series, but is 10 years old here.
* AscendedExtra: In the previous series, she was more or less just a disposable mook whose only real purpose was [[ButtMonkey to get thrown around]] by Ben, and with fairly little character. She gets much more emphasis as an independent antagonist in this series, along with a more developed personality and explanation for her hair.
* BadassAdorable: Much stronger than her Classic self and far cuter as well.
* CombatTentacles: Her hair still holds this power.
* CompositeCharacter: Her name and powers are the same as the original Frightwig, but her being around Ben's age and her [[EvilCounterpart dark similarities]] to him make her more similar to Kevin 11.
* CharacterizationMarchesOn: Most of her later reboot episodes portray her as a rather stern and no-nonsense crook, a farcry from her much more hammier and sadistic side in her debut, "All Wet."
* DidntThinkThisThrough: In her debut, she decides to flood a water park, and she never thinks to flee before the park was destroyed.
* DudeWheresMyRespect: She doesn't much like being treated as a "rookie" due to her age when she joins the Circus Freak Trio. Then she, like the rest of the trio, gets fed up with Zombozo's BadBoss nature.
* EnfanteTerrible: Only 10-years-old and already a master criminal.
* EvilCounterpart: To Ben. She's a mischievous 10-year old who gets a powerful device attached to her body (in her case, her hair), but she uses it for evil rather than for good.
* EvilerThanThou: ''Zombozo'' actually attempts to reform in "Party Poopers", but Frightwig drags him back to a life of crime.
* MadScientist: Her hair device and A.I. along with conversations she holds with Acid Breath and Thumbskull in "Vote Zombozo" shows that she's obsessed with science and technology to an amoral degree.
* TagAlongKid: She is the youngest of the Circus Freak Trio, being 10 years old, while Acid Breath is a 16 years old teenager and Thumbskull is an adult.
* TheRival: To Ben, mainly on her side due to how frustrated she is with him thwarting her plans. Ben [[UnknownRival just treats her like a nuisance]].
* TroublingUnchildlikeBehavior: Trying to sabotage factories, robbing banks, attempting to blow up a dam, throwing a ''computer into a swimming pool full of people'', attempting to ''destroy a city''...all stuff she does.
* WeaksauceWeakness: Her hair is rendered powerless when it gets wet, not to mention she can tangle herself up in it.

[[folder:Michael Morningstar]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/rebootmorningstar.png]]
->'''Voiced by:''' Creator/DrakeBell (Season 1), Creator/YuriLowenthal (Season 2)

In the reboot, Michael Morningstar appears as a teenage movie star playing an [[Film/{{Twilight}} Edward Cullen]] {{Expy}} who Gwen has a crush on until it's revealed that he is a real energy vampire who drains the energy given off by fans who adore him.

* ActuallyNotAVampire: He's a mutant, but he's still close enough to one.
* AdaptationalEarlyAppearance: In the first adaptation he didn't debut until ''Alien Force'' where Ben and Gwen were 15 years old, while here he shows up while they're still 10 years old.
* AdaptationalVillainy: He is somehow ''worse'' than the original incarnation of the character, having been doing evil for centuries rather than just as a normal teenager, and while the extent of the original Michael's dysfunctional relationship with Charmcaster was simply deceit, this version is emotionally and physically abusive toward her as well. Darkstar was at least willing to [[EnemyMine team up with Ben]] [[PragmaticVillainy fight off the Highbreed invasion]], while this version lacks any such moments.
* AgeLift: Unlike his teenage Classic counterpart, this Michael is hundreds of years old.
* AndIMustScream: [[spoiler:Charmcaster traps him in her spellbook as revenge for his abuse towards her.]]
* AssholeVictim: [[spoiler:If he did die when Charmcaster's spellbook is destroyed, he thoroughly deserved it.]]
* BitchInSheepsClothing: To Gwen and any of his fans, so that he can absorb their energy.
* DeaderThanDead: Possibly, as he was turned into energy and trapped inside Charmcaster's book...which was later completely destroyed in "Which Watch".
* DomesticAbuse: To Charmcaster in her first appearance. Unlike his Classic incarnation, who was just manipulative and unfaithful, this version is flat-out abusive toward her, frequently yelling at her in order to keep her submissive to him and forcibly taking her power for himself. [[spoiler:Thankfully, she ultimately sees the light and gives him his comeuppance.]]
* EnergyAbsorption: This is once again how his powers work.
* {{Expy}}: He now has more traits reminiscent of Kevin 11, such as changing appearance after absorbing someone's energy.
* {{Jerkass}}: Even before he's outed as a villain, he's a jerk to other people due to his fame making him arrogant.
* KarmaHoudini: In his first appearance, the energy he stole is recovered and he is humiliated, but the heroes are unable to actually charge him with anything so they just leave. After he vows revenge, along comes a fangirl to provide him with fresh new energy...
** That fangirl [[spoiler:ended up being Charmcaster, and in his second appearance, she [[AssholeVictim finally gives him what he deserves]] once she finally realizes that he doesn't care about her]].
* LightIsNotGood: His debut episode is even titled "Bright Lights, Black Hearts".
* LightningBruiser: He's very efficient in battle, as Ben finds out the hard way.
* ManipulativeBastard: He knows how to use his celebrity status to his advantage.
* ReallySevenHundredYearsOld: He implies that the teen star gig is just his latest scheme for adoration and that he's been at it for ''hundreds'' of years.
* TheSociopath: He ''still'' has no empathy for anyone but himself.
* UncertainDoom: [[spoiler:It's unknown if he was still in Charmcaster's spellbook when it's accidentally destroyed by Monster Kevin.]]

[[folder:Charmcaster]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/nucharmcaster.png]]
->'''Voiced by:''' Creator/TaraStrong

* AdaptationalBadass: Her magic in this series gives her a boost in her physical abilities. In "What Rhymes with Omnitrix?", Ben and Kevin both attack her as Humungousaur and Quad Smack, two large, muscular aliens... and she [[CurbStompBattle kicks their asses!]]
* AccidentalHero: She takes away with a spell Kevin in "Which Watch" just as he was about to kill Ben whose watch has timed out. She had no intention of saving him however: she was actually trying to kidnap Ben, wanting to use him against Gwen.
* AdaptationalHeroism: The original Charmcaster was more than happy to wreak havoc [[TheHedonist just because she could]], committing crimes that had nothing to do with the Tennysons. This version is more reserved and keeps her focus squarely on her rivalry with Gwen. A good example is in "Which Watch", when she informs Ben when he's risking causing an explosion and fire outbreak, and allows him to evacuate civilians from the building. Compare to the original show's "A Change of Face", where Charmcaster outright causes an explosion and fire outbreak in a building full of civilians without remorse.
* AdaptationOriginConnection: Rather than being Hex's niece, Charmcaster is now a normal girl who became magical due to buying Hex's spellbook, which only ended up being put on the market thanks to Ben and Gwen defeating Hex in "Freaky Gwen Ben". But as of "What Rhymes with Omnitrix?", it then turned out she ''is'' Hex's niece after all.
* AgeLift: A mild case, but given her design she seems to be a few years younger than her 15-year-old counterpart from the original show.
* AntiVillain: This version of Charmcaster is a truly sympathetic character from her introduction, particularly due to the new origin she is given.
* ArchEnemy: To Gwen, of course. Her debut episode even ends with Gwen feeling both happy and concerned that she's gained one, and is even titled "Gwen's Arch-enemy" in German.
* BeCarefulWhatYouWishFor: Charmcaster swaps places with Gwen in "Charm School's Out" in order to ruin Gwen's supposedly perfect life. Grandpa Max ends up making her try to fix an absurdly large and complicated radio, which is such a hassle for her that she re-thinks her view of Gwen's life.
-->'''Charmcaster:''' I cannot ''believe'' he'd make Gwen do this!
* BerserkButton: Do ''not'' call her a nerd, a reminder of what she was before she became a sorceress. Gwen in general is also this for her, since she reminds her of her past self and yet is somehow more successful in life.
* BreakingSpeech: Gives on to Kevin in "Which Watch", shaking his self-confidence so that he's more liable to join the Forever Knight in the future.
* BrokenBird: She had a lonely background, and at the end of her debut it only gets worse as she notes that she's learned that she doesn't need anyone.
* BlackMagicianGirl: And a frighteningly skilled one, at that. Even Ben and Gwen are freaked out by her magic powers.
* CastingGag: Coupled with her new characterization of being more book-loving and prone to stress-induced [[FreakOut freak-outs]], Tara Strong voicing her makes her come off as a villainous version of [[WesternAnimation/MyLittlePonyFriendshipIsMagic Twilight Sparkle]].
* DemotedToExtra: Classic Charmcaster became one of ''the'' most central antagonists in the series, pretty much overshadowing her uncle completely. Here, all things considered, she isn't quite as prominent, often playing second fiddle to other villains like Kevin or the Forever Knight. Even her iconic rivalry with Gwen is largely one-sided on her part and gradually given less focus this time.
* DiscardAndDraw: After losing her spellbook she gains a rune necklace from her uncle that works differently. She finds she has to read Kevin's poetry which the necklace translates into incantations for spells. At the end of the episode where it appeared she loses even that but still manages to conjure a portal by wishing for it.
* EarlyBirdCameo: [[spoiler:She turns out to be the fangirl that approached Michael Morningstar in his first appearance.]]
* EasilyForgiven: She put Kevin under her control, gave him a BreakingSpeech, and generally caused him a lot of grief in "Which Watch". She gives him even more in "What Rhymes With Omnitrix?". [[spoiler:He doesn't bring any of this up at all in "Roundabout" and has no qualms working with her. Even when he stops her from killing the girl he has a crush on, he's more comedically miffed than angry and it's played more as part of their childish EvilerThanThou rivalry.]]
* EvilerThanThou: She and Kevin seem to have a mild rivalry concerning this, with both insisting that they are the more capable villain.
* EvilIsPetty: In "Which Watch", her main objective is to destroy a space camp just because Gwen enjoys it so much.
* FromNobodyToNightmare: Charmcaster was an awkward, nerdy girl with low self-confidence until she gained magical powers from Hex's spellbook and developing a new, aggressive goth-like appearance and attitude.
* GreenEyedMonster: In "Charm School's Out", she is shown to be envious of Gwen's "perfect life" and swaps places with her in order to ruin it for her, [[BeCarefulWhatYouWishFor only to find out it's not as perfect as she thought]].
* {{Hypocrite}}: In "Which Watch", she demeans Kevin as thinking he's more important than he is and that without his watch, he's nothing. Says the girl whose whole self-esteem hinges on a book.
* IHatePastMe: She hates Heather, the "weak" nerdy girl she used to be, and the source of her rivalry with Gwen in this version is because she reminds her of her past self and yet somehow is able to one-up her, thus defeating Gwen will be the only way she can prove her reinvention as "Charmcaster" is justified.
* InferioritySuperiorityComplex: It's an even bigger part of her character in this show than it was in the original, and what drives her rivalry with Gwen.
* JumpingOffTheSlipperySlope: In "What Rhymes with Omnitrix?", she has become so hateful of Gwen that she actually attempts to harm innocent people in order to get to her, which was something she previously was above doing. Gwen calls her out at the end of the episode by saying that she should know better than to devalue others like playthings, as [[YouAreWhatYouHate she knows how that feels]].
* MirrorCharacter:
** Her and Kevin's squabbling in "Which Watch" and "What Rhymes with Omnitrix?" highlights their similarities - both arrogant, both immature, obsessed with defeating their Tennyson rival, and both actually feeling like they'd be nothing without a certain item (Kevin's watch and Charmcaster's book and amulet respectively.)
** She and Gwen also qualify, not so much in regards to how Charmcaster is now but to how she ''used'' to be, which is [[IHatePastMe what fuels Charmcaster's hatred of Gwen]].
* MysticalWhiteHair: She wouldn't be Charmcaster without it.
* MythologyGag: Her real name in this continuity is Heather. In the classic continuity, this is the name Darkstar mistakenly called her when asked if he remembered her true name, which was Hope.
* NobleDemon: Has definite shades of this - see PetTheDog below.
* NotSoHarmlessVillain: Despite possessing very powerful magic, Charmcaster doesn't really come off as particularly threatening in her first few appearances. Then she has her spellbook traded out for a magical necklace, which leads to her becoming more ruthless and dangerous of an opponent.
* PetTheDog:
** After trapping Michael in a book, she has an easy opportunity to eliminate Gwen, who is powerless, and Ben, whose Omnitrix has timed out. Instead, she leaves them alone as thanks for saving her from Michael, albeit with the declaration that they will be enemies the next time they meet.
** In "Which Watch", she actually tells Ben about the danger of mixing Stinkfly's goop with Kevin's fire and lets him evacuate the innocent civilians from the building, as she only wants to destroy the Tennysons and not anyone else.
* TheRival: To Gwen, as is the norm.
* TheSmurfettePrinciple: [[spoiler: She's the only girl in the Forever Knight's team in "Roundabout".]]
* SourOutsideSadInside: As hostile and nasty as she behaves, the sense of insecurity and self-loathing she has for her old "weak" self is palpable in everything she does.
* ThatManIsDead: After Michael is exposed as not caring about her, he tries to worm his way out of punishment, calling her by her real name of Heather in the process. Her response is an angry "My name...is CHARMCASTER!"
* TookALevelInBadass: First when she gains magic powers, and then again when she finally sees Michael for what he is. [[spoiler:She takes another one when she trades her damaged book out for a magic rune, which boosts her power and causes her to be more willing to get her own hands dirty as opposed to controlling other things or people to do it for her. By "What Rhymes with Omnitrix?", she puts both Ben ''and'' Kevin on the receiving end of a CurbStompBattle with her magic.]]
* UngratefulBastard: PlayedWith - she leaves Ben and Gwen alone because she ''is'' grateful for Gwen saving her from Michael - but that gratitude is also ''part'' of why she declares herself TheRival to Gwen and vows to defeat her if they meet again since it's a reminder of how weak she was in the situation and she can't stand that.
* TheUnfettered: [[spoiler:When she obtains a magic rune necklace, she loses any restraint and uses its magic power with reckless abandon, especially to attempt to eliminate Gwen.]]
* UnrelatedInTheAdaptation: Subverted, this version of Charmcaster didn't seem to be Hex's niece like the original version, but "What Rhymes with Omnitrix?" confirms that she actually is.
* VillainsOutShopping: In "What Rhymes with Omnitrix?", she is attending a poetry reading without any ulterior motives, and only ends up causing trouble when the sight of Gwen triggers her BerserkButton.
* WhatTheHellHero: To Grandpa Max in "Charm School's Out", asking him what kind of grandfather makes a child fix an absurdly complicated RV radio. She sounds legitimately offended on Gwen's behalf.
* YouAreWhatYouHate: Gwen calls her out in "What Rhymes with Omnitrix?", saying that she shouldn't let her anger consume her to the point where she's using others as playthings, since she knows how that feels: Michael did it to her. But since this valid point comes from Gwen, Charmcaster ignores it.
[[/folder]]

[[folder:Circus Freak Trio]]
->'''Voiced by: Creator/JoshKeaton (Acid Breath), Creator/JohnDiMaggio (Thumbskull)

* AdaptationalBadass: In the Classic Continuity, they were easily kicked around by Ben in every encounter they had. In the Reboot, they are well-coordinated enough to give Four Arms a good fight.
* AgeLift: In the reboot, Acid Breath is 16 years old, when he was much older in the original continuity.
* BreathWeapon: Acid Breath. As suggested by his name.
* ClownCar: They ride in one and also use it to stash any loot they have stolen.
* DumbMuscle: Thumbskull is very strong, but not too bright.
* ExactlyWhatItSaysOnTheTin: Acid Breath is, well, a guy with acid breath. What else?
* MsFanservice: Frightwig in ''Omniverse'' wears a more revealing jumpsuit that shows off her body.
* PunnyName: Thumbskull's name is a play on the insult "numbskull".
* RealMenWearPink: The reboot episode "Vote Zombozo" shows that Thumbskull was planning to use his part of the loot to go to a spa and have the nail-like crest on his head manicured.
* ScrewThisImOuttaHere: After realizing Zombozo wasn't going to pay them squat, they fled to Mexico.
* TookALevelInBadass: In the reboot episode "Speechless on the Seine": not in fighting skills (they are already a case of AdaptationalBadass), but in position: they are now working ''with'' Zombozo, not ''for'' him, which means the clown can no longer boss them around.
* VillainsOutShopping: The end of "Vote Zombozo" has the three of them chilling out on a beach.
** During the theft they were literally talking to each other how they wanted to spend their share.
** "Speechless on the Seine" reveals that Thumbskull enjoys juggling in his free time.
* WeaksauceWeakness: ''All three of them have one''; Acid Breath becomes harmless when something obstructs his mouth, Frightwig can be trapped in her own hair, and Thumbskull is an idiot.

[[folder:SixSix]]
->'''Voiced by:''' Creator/JoshKeaton

* AdaptationalHeroism: [[spoiler:In the Reboot, [=SixSix=] turns out to have been GoodAllAlong, as he was actually trying to prevent Vilgax's return.]] However, following appearances averts this, implying he did that because somebody paid him to.
* BountyHunter: It is his main profession and how he encountered Ben in the first place.
* CoatHatMask: [=SixSix=]'s introduction in the movie had him wearing a trenchcoat and a hat in addition to his helmet.
* {{Expy}}: Of Boba Fett from ''Franchise/StarWars''. He also bears a few similarities to the [[Franchise/{{Predator}} Predators/Yautja.]]
* OnlyInItForTheMoney: They don't care about the morality of their employers or what they're told to do, as long as they get paid.
* OutofFocus: He is depicted as a generally less capable fighter than his hunter associates, and Kraab instead gets more limelight as Tetrax's rival.
* SilentSnarker: If his associates' reactions are anything to go by, [=SixSix=] has quite a sharp tongue in his own alien dialect.
* TheUnintelligible: According to WordOfGod, the Sotoraggian language is so complex that it cannot be translated with TranslatorMicrobes. For some reason though, some aliens, including Rook, have displayed the ability to understand them.

[[folder:Kraab]]
->'''Voiced by:''' Creator/TravisWillingham

An alien BountyHunter, first introduced as one of the people sent by Vilgax to get the Omnitrix.

* AdaptationalBadass: He is actually a pretty formidable opponent in the reboot: he outlasted [=SixSix=] in both battles against [[TheAce Shock Rock]], takes control when he and [=SixSix=] teams up against Tetrax and even gets the drop on him, shattering one of his arms. Tetrax is only saved by [[SaveTheVillain Ben's intervention]].
* AdaptationalHeroism: [[spoiler:In the Reboot, he turns out to have been GoodAllAlong, as he was actually trying to prevent Vilgax's return.]] Like [=SixSix=], this was averted in the following episodes.
* GiantEnemyCrab: As suggested by his name, he has a distinct crab-like appearance, completed with a pincer.
* LightIsNotGood: His armor is golden, but he is far from being a good guy.
* OutOfFocus: Downplayed. Although he is still used very sparingly across seasons, he manages to have a slightly more prominent role.
* TheSmartGuy: Of the team he forms with [=SixSix=] and Tetrax in the reboot. He insists that he should get a larger share of their pay for this.
* ThirdPersonPerson: He does it sometimes in the reboot.
-->"Kraab will return! Mark Kraab's words!"
* WeaksauceWeakness: He can be taken out in a single shot of electricity.

[[folder:Yawkwawi]]
[[quoteright:334:https://static.tvtropes.org/pmwiki/pub/images/yawkwawi.png]]

An evil, magical, talking (and singing) bear who was transformed into a wooden statue. He tricks Ben and Gwen into helping him escape from the valley he is trapped in to get back his powers.

* ActorAllusion: Once again, Creator/KeithDavid plays [[WesternAnimation/{{Gargoyles}} a non-human character who turns into a statue during the day]].
* AffectionateNickname: To further convince Ben and Gwen he asks them to call him Yawk, since they "are friends".
* BearsAreBadNews: A evil magical bear that tricks Ben and Gwen and tries to eat them.
* CombatPragmatist: Unable to defeat Ben, he tosses Gwen from the promontory they were fighting on, forcing the kid to save her.
* EvilAllAlong: He only pretended to be friendly with the Tennysons cousins to escape and eat them later.
* FreudianSlip: He almost blew his cover when he asks Gwen one last flavour... err, he means favour.
* LiterallyShatteredLives: After falling from the promontory, he turned to wood and crashes. Later Wildvine puts him back together.
* NotSoDifferentRemark: When Ben doesn't believe that he was turned into a statue by a jealous wizard, Yawk explains that when you are too good, other people want to bring you down, and that someone like Ben (who can turn into powerful aliens) should know what is like. Ben seems to actually ponder it.
* PowerOfTheSun: If the sun rises while he is in the valley, he turns back into wood. If he is out, he regains all of his power.
* RedEyesTakeWarning: When he is almost free, one of his eyes turns red.
* SuperStrength: His episode was the debut of Omni-enhanced Four Arms, and the bear managed to hold his own against him.
* VillainOfTheWeek: Only appeared in "Mayhem in Mascot".
* VillainSong: Once it is revealed he was EvilAllAlong, "Set Me Free" is definitely this. He even sings a DarkReprise of it later.
* WouldHurtAChild: And then eat them.

[[folder:King Koil]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/koil.PNG]]
[[caption-width-right:350:"What reptile are you?"]]
[[caption-width-right:350:[[labelnote:After powering up from the Sun]]\\
https://static.tvtropes.org/pmwiki/pub/images/sixsnake.PNG[[/labelnote]]]]
->'''Voiced by:''' Creator/DeeBradleyBaker

A reptilian humanoid, hailing from underground, who wants to rule the surface world as it's king.

* FantasticRacism: He loathes humans. Given his reaction to Grey Matter having gills, he is not fond of aquatic creatures, either.
* HealingFactor: He can regenerate lost limbs, much like The Lizard.
* HoistByHisOwnPetard: Ben uses the rearview mirrors of the Rust Bucked to reflect his hypnosis, forcing him to retreat underground.
* HulkSpeak:
-->'''King Koil:''' I turn up sun lamp, get STRONG! Be king of world.
* HypnoticEyes: He is revealed to have them in his second appearance.
* InterspeciesRomance: Despite his hatred of humans, he loves Mary Jo Fourfeathers, and wishes to make her his queen. She does not reciprocate.
* LogicalWeakness: His infrared vision only allows him to see people through their own body heat. This makes Diamondhead, an alien made of cool crystal, invisible to him.
* MadeASlave: Animo uses a mind control to force Koil to serve him in "Rekoil".
* MultiArmedAndDangerous: After he is exposed to the Sun dome for enough time, he sprouts four more arms to become a six-armed reptile.
* ThePowerOfTheSun: He uses heat from any sun-like environment to make himself more powerful.
* WeCanRuleTogether: He offers this to Mary Jo, wanting her to rule with him as queen. Even though she declines, he promises to come back for her, even leaving her the tiara.

[[folder:Solar and Polar Twain]]
[[quoteright:350:https://static.tvtropes.org/pmwiki/pub/images/poles_238.png]]
->'''Voiced by:''' Creator/ToddHaberkorn (Solar), Creator/TomKenny (Polar)

A group of twin brothers and criminal scientists.

* BashBrothers: Most of the time, but when they're not...
* CainAndAbel: They constantly fight over everything.
* EvenBadMenLoveTheirMamas: In "Tokyo Fun, Part 2: Slamming It Up", the two devote themselves to claiming medals in the name of their mother, even if it isn't exactly what she wants.
* EvilIsPetty: Their whole reason for being evil is because their mother lost out on a gold medal when they were kids. Gwen notes it is a long time to hold a grudge.
* MagnetismManipulation: Their main power.
* PaletteSwap

[[folder:Breaker One-Nine]]
[[quoteright:479:https://static.tvtropes.org/pmwiki/pub/images/breaker_51.png]]
->'''Voiced by:''' Creator/JohnDiMaggio

A man working for a mysterious excavation company who is overly-attached to his machinery, dubbed L.I.Z.A.

* BadassNormal: Can put up a fight against both Ben and Kevin's aliens, with only his mecha.
* ConstructionVehicleRampage: He uses his bulldozer, L.I.Z.A., to cause mayhem.
* HiredGuns: Is always under the pay of an unnamed company.
* LegalizedEvil: In his debut, he brings a permit to legally justify his destruction of the environment.
* TransformingMecha: L.I.Z.A. can morph into a battle mecha.

[[redirect:Characters/Ben10]]